. Discovery reports. Discovery (Ship); Scientific expeditions. Fig. 143. Germ cells in normal testis. a., spermatogonia; b., spermatocytes; c, spermatids; d., Fig. 144. Section of active testis of Fin whale during the male sexual season. indicates unmistakably an active proliferation of germ cells, and a speeding-up in the production of spermatozoa. In Figs. 144 and 141 this active condition of the testis can be compared with the relatively passive condition. It happens rather often in a testis in the latter condition that the section of a tubule shows numerous spermatozoa which
. Discovery reports. Discovery (Ship); Scientific expeditions. Fig. 143. Germ cells in normal testis. a., spermatogonia; b., spermatocytes; c, spermatids; d., Fig. 144. Section of active testis of Fin whale during the male sexual season. indicates unmistakably an active proliferation of germ cells, and a speeding-up in the production of spermatozoa. In Figs. 144 and 141 this active condition of the testis can be compared with the relatively passive condition. It happens rather often in a testis in the latter condition that the section of a tubule shows numerous spermatozoa which may be as abundant as in the active testis, but the distinction lies in the fact that. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Institute of Oceanographic Sciences (Great Britain); National Institute of Oceanography; Great Britain. Colonial Office. "Discovery" Committee. London, New York, Cambridge University Press
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