|
| |
|
|
|
|
||||
| Home Help Feedback Subscriptions Archive Search Table of Contents | ||||
|
Fig. 3. white, brown and scarlet mutants have organelle
counts that mostly do not differ from wild-type controls. All values are mean
± s.d. (N=4 flies). (A,B) Sizes of R1–R6 profiles.
Relative to wild-type controls, no differences were detected in profile sizes,
either in their cross-sectional area (µm2; A) or membrane
perimeter (µm; B). (C,D) The number of synapse profiles per micrometer of
membrane perimeter, counted as either tetrad (C) or feedback (D). (E) Number
of synaptic vesicle profiles per R1–R6 profile. These are significantly
higher in Oregon-R wild-type than all mutant R1–R6
(*P<0.03, t-test). (F–H) Numbers of
capitate projections (CP) in the same samples as C–E, seen as three
profiles: single penetrating (F), shallow (G) and multiple headed (H). (For
definition of types, see Materials and methods.) No significant differences
were seen except in the number of multiple-headed penetrating invaginations,
which was greater in the wild-type control than in either white or
scarlet heads (*P<0.05, t-test, in
H). Some counts showed wide variation, which we attribute to our methods for
sampling organelle profiles at relatively low frequencies. By chance, the
variation appeared larger in wild-type than mutant values (D,G,H).
|
