Fig. 3. The Kinesin heavy chain is required for ooplasmic movement at stage 10b. Movement of particles that reflect 568 nm light in wild-type (A-C) and Khc mutant (D-F) egg chambers. The oocytes were scanned either once (1; A,D) or continuously using the Kalman function of the confocal microscope for 15 (15; B,E) or 30 (30; C,F) scans. The ooplasmic streaming observed in wild-type oocyte is completely blocked in Khc mutant oocytes.