ライフサイエンスコーパス: ommatidia

1 th Rh3 and Rh4 in the R7 cells of individual ommatidia.

2 nvolved in terminal differentiation of adult ommatidia.

3 chiral forms of the individual unit eyes, or ommatidia.

4 in a retina with a precise array of maturing ommatidia.

5 death is used to remove excess cells between ommatidia.

6 tors and the support cells that comprise the ommatidia.

7 k that regulates Rhodopsin expression across ommatidia.

8 ror-image fields of opposite chiral forms of ommatidia.

9 ecisely organized in elementary units called ommatidia.

10 e retina, and show a disturbed patterning of ommatidia.

11 ommatidia and component cells of individual ommatidia.

12 umbers of photoreceptor cells in some of the ommatidia.

13 a precisely ordered repetitive array of 800 ommatidia.

14 redundant role in maintaining separation of ommatidia.

15 lete separation of the cell from neighboring ommatidia.

16 ary and sufficient to maintain separation of ommatidia.

17 n of a rough eye produced by poorly arranged ommatidia.

18 dium, or contact R7 and/or R8 from different ommatidia.

19 oduce a near-perfect lattice of unit eyes or ommatidia.

20 n in the ventral eye is occupied by standard ommatidia.

21 ges to reposition inappropriately orientated ommatidia.

22 as expressed in the other seven cells of all ommatidia.

23 tors, and together define the three types of ommatidia.

24 s of Drosophila regulates the orientation of ommatidia.

25 photoreceptors descending below the layer of ommatidia.

26 ls, which leads to the formation of aberrant ommatidia.

27 tion in register between adjacent columns of ommatidia.

28 f photoreceptors from dissociated Drosophila ommatidia.

29 cs and cell type specification in developing ommatidia.

30 -cell, patch-clamp recordings on dissociated ommatidia.

31 results in rough and larger eyes with fused ommatidia.

32 ng and smaller eyes with a reduced number of ommatidia.

33 thereby resulting in the complete absence of ommatidia.

34 ophila melanogaster results in distortion of ommatidia accompanied by fluid discharge.

35 le in propagating the evenly spaced array of ommatidia across the developing Drosophila retina.

36 large-scale systematic size variation of the ommatidia across the eye of both wild-type and mutant an

37 ate analogs of TJs, are present in the adult ommatidia and are formed between and among the cone and

38 ; they adopt asymmetrical positions in adult ommatidia and are the site of action for several essenti

39 and results in an increase in the number of ommatidia and component cells of individual ommatidia.

40 ndicate mutual preferential adhesion between ommatidia and IOCs mediated by four IRM proteins is both

41 a horizontal stripe of one to three rows of ommatidia, and op8 is expressed in a fourth region in th

42 categories; the insulation of the individual ommatidia, and the insulation of the compound eye as a w

43 redisposition of dorsal cells to generate DR ommatidia appears to be endowed by the exclusive dorsal

44 most peripheral rows (including the DR) the ommatidia are bald.

45 Two classes of ommatidia are distributed stochastically in the retina:

46 behaviors: inner photoreceptors R7+R8 of DRA ommatidia are necessary and sufficient for dorsal polaro

47 The ommatidia are omnidirectionally arranged along a hemisph

48 Many stbm ommatidia are reversed anteroposteriorly and/or dorsoven

49 In the Drosophila eye, neighboring ommatidia are separated by inter-ommatidial cells (IOCs)

50 is made from hundreds of asymmetric subunit ommatidia arranged in a crystalline-like array with each

51 o the angular separation between two and six ommatidia at each edge of the expanding object on the lo

52 Ommatidia at the edge of the eye, which often lack the f

53 The fly retina contains two types of ommatidia, called 'pale' and 'yellow', defined by differ

54 Third, ommatidia characteristically project mechanosensory hair

55 e rhodopsins expressed in the two classes of ommatidia depends on a series of highly conserved homeod

56 undifferentiated cells into clusters called ommatidia during late larval and early pupal development

57 e contains some 750 identical modules called ommatidia, each containing eight photoreceptor cells (R1

58 approximately 750 independently functioning ommatidia, each containing two photoreceptor subpopulati

59 The Drosophila eye is composed of about 800 ommatidia, each of which becomes dorsoventrally polarise

60 ies founding R8 photoreceptors of individual ommatidia, evenly spaced relative to one another in a pa

61 rphologically unique, polarization-sensitive ommatidia exist in the dorsal periphery of many insect r

62 hat spitz function is required in developing ommatidia for the first cell recruitment step, and that

63 include Drosophila neuronal differentiation, ommatidia formation in the compound eye, and wing hair p

64 In addition, the ommatidia have an altered morphology and often contain a

65 e parallel alignment of hairs, bristles, and ommatidia in Drosophila have all served as model systems

66 elial structures, such as the wing hairs and ommatidia in Drosophila, are aligned in the plane of the

67 ped vision in the early Cambrian, over 2,000 ommatidia in each eye.

68 f photoreceptors and the organization of the ommatidia in living animals.

69 Ommatidia in the adult eye are aligned at right angles t

70 f minerals to the honey-comb organization of ommatidia in the compound eye of insects.

71 of two chiral forms, depending on position: ommatidia in the dorsal half of the eye adopt one chiral

72 A narrow band of ommatidia in the dorsal periphery of the Drosophila reti

73 Several observations suggest that developing ommatidia in the Drosophila eye have distinct dorsal-ven

74 is evident in the coordinated orientation of ommatidia in the Drosophila eye.

75 mental defects, including reduced numbers of ommatidia in the eye and morphological bristle abnormali

76 or of planar polarity for hairs on the wing, ommatidia in the eye, and sensory bristles on the notum.

77 ator in the eye) could be interpreted by all ommatidia in the field.

78 originating from the six rows of specialized ommatidia in the stomatopod's eye, termed the midband.

79 lf of the eye adopt one chiral form, whereas ommatidia in the ventral half adopt the other.

80 in the third instar imaginal disc to 'lock' ommatidia in their final position, and that in its absen

81 Two types of ommatidia in which R7 and R8 contain different rhodopsin

82 egular hexagonal array morphology of facets (ommatidia) in the Drosophila compound eye is accomplishe

83 he anatomical organization of the Drosophila ommatidia is achieved by specification and contextual pl

84 tic coupling of Rh3 between R7 and R8 in DRA ommatidia is important for comparing celestial e-vector

85 The choice between pale versus yellow ommatidia is made in R7 cells, which then impose their f

86 ellular arrangements and orientations of the ommatidia is that they respond to two axes of polarized

87 Remarkably, many scute-induced ommatidia lack R8 although they contain outer photorecep

88 the dorsal and ventral fields of eye units (ommatidia) meet along the dorsoventral midline, forming

89 nt with the role of these factors in sorting ommatidia, mis-expression of Hbs plus Sns within a singl

90 , localized alignment of groups of cells and ommatidia morphogenesis coupled to neurogenesis.

91 d on a rough-eye phenotype with disorganized ommatidia observed in adult escapers of the hrp38 mutant

92 phila eye is a polarized epithelium in which ommatidia of opposing chirality fall on opposite sides o

93 e therefore homologous to the posterior-most ommatidia of the adult retina in primitive nonholometabo

94 The arrangement of photoreceptors in the ommatidia of the Drosophila compound eye is polarized, h

95 the eight photoreceptor cells in each of the ommatidia of the fly compound eye and the uniform orient

96 in a coordinated cellular movement, enabling ommatidia of the same stage to rotate simultaneously.

97 In some ommatidia, P360 or P470 was expressed in R1 and R2 oppos

98 gles to the equator, with dorsal and ventral ommatidia pointing in opposite directions.

99 eptors R3 and R4 adopt their fates, and then ommatidia rotate clockwise or counterclockwise in accord

100 cadherin promotes rotation, as DE-cad mutant ommatidia rotate less than wild type or not at all.

101 c mutations known is roulette (rlt) in which ommatidia rotate to a random degree, often more than 90

102 a motor protein, regulates the rate at which ommatidia rotate: in zip mutants, the rate of rotation i

103 adherins act to restrict this movement, with ommatidia rotating too fast in the mutants.

104 spectral and polarization sensitive midband ommatidia show some specializations not found in the lam

105 n karst mutant eyes, a significant number of ommatidia specifically lack photoreceptor R7 alongside m

106 Analysis of mosaic ommatidia suggests that no specific photoreceptor must b

107 1, causes depigmentation and degeneration of ommatidia that are rescued by expression of either dBip

108 y interior to the PR lie the dorsal rim (DR) ommatidia that are specialized polarized light detectors

109 rosophila eye is composed of several hundred ommatidia that can exist in either of two chiral forms,

110 e ommatidium (unit eye) or between different ommatidia that contain spectrally distinct inner photore

111 cells that previously surrounded peripheral ommatidia that subsequently died.

112 In Drosophila ommatidia, the junctional organization and barrier forma

113 osophila retinal mosaic are expressed in DRA ommatidia, the role of Hth in this transcriptional netwo

114 ecification culminates in differentiation of ommatidia through the activities of the proneural gene a

115 ls: cadherin-based adhesion is important for ommatidia to remain in their appropriate positions.

116 e support cells that lie between the retinal ommatidia--to better understand the role of Dpp signalin

117 Ommatidia (unit eyes) are classified into two subtypes,

118 nsitive Rhodopsin proteins in three types of ommatidia (unit eyes), which are distributed stochastica

119 h activates its own expression in peripheral ommatidia via a positive feedback loop.

120 rescent protein translocation in dissociated ommatidia, we show that translocation is profoundly slow

121 In the nymphs, ommatidia were smaller and photoreceptors were on averag

122 ly populated by imaging elements (artificial ommatidia), which are comparable in number (180) to thos

123 n the ato(1) mutant induces the formation of ommatidia, which occasionally sprout ectopic macrochaeta

124 tors leads to an extra photoreceptor in many ommatidia, while ectopic expression of Dip3 in non-neuro

125 ed, forward pointing fovea ( approximately 5 ommatidia wide, interommatidial angle Deltaphi = 0.28 de

126 -terminal domain, led to progressive loss of ommatidia with remarkable signs of neurodegeneration.

127 dization and found to contain three kinds of ommatidia with respect to their patterns of short wavele

128 Remarkably, however, mosaic pupal ommatidia with three or fewer Dip3(+) photoreceptors alw

129 influenced by the internal structure of the ommatidia, with cells of greater relative mechanical sti

130 etinas into homogeneous fields of UV/UV-type ommatidia, with corresponding changes in other coordinat