. The eggs of mammals . Fig. 22. Section through a fragmented mouse ovum recovered 81 hours after a sterile mating. Phagocytes (C) absorb the degenerated cytoplas- mic particles (E). (From the Biological Bulletin.) The rate of passage of ova in the tubes and the method of transport have been the subject of considerable contro- versy and discussion (see Parker, 1931 and Hartman, 1932&). It is generally acknowledged that the passage through the upper portions of the tubes is relatively rapid (Anderson, 1927; Lewis and Wright, 1935) since except shortly after ovulation both unfertilized and f
. The eggs of mammals . Fig. 22. Section through a fragmented mouse ovum recovered 81 hours after a sterile mating. Phagocytes (C) absorb the degenerated cytoplas- mic particles (E). (From the Biological Bulletin.) The rate of passage of ova in the tubes and the method of transport have been the subject of considerable contro- versy and discussion (see Parker, 1931 and Hartman, 1932&). It is generally acknowledged that the passage through the upper portions of the tubes is relatively rapid (Anderson, 1927; Lewis and Wright, 1935) since except shortly after ovulation both unfertilized and fertilized ova are found for the most part in the lower two-thirds of the tube. The method of propulsion of the ova by ciliary and other tubal movements is adequately discussed by both Parker and Hartman and will not be entered into here.
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