. Anatomischer Anzeiger. Anatomy, Comparative; Anatomy, Comparative. Fig. Fig.|14. Fig. 12. Portion of a seminiferous tubule of an adult killed Sept. 10th. X 721. Near the periphery of the tubule to the left, is seen a Sertoliau cell, to the right of which are two spermatogonia. Above, are a number of spermatids and spermatozoa. Fig. 13. Portion of a seminiferous tubule of an adult killed Oct. 20th. X 721. Three spermatogonia of different size are shown near the periphery of the tubule, while three nuclei of Sertolian cells occur nearer to the lumen. Fig. 14. Portion of a seminiferous tub


. Anatomischer Anzeiger. Anatomy, Comparative; Anatomy, Comparative. Fig. Fig.|14. Fig. 12. Portion of a seminiferous tubule of an adult killed Sept. 10th. X 721. Near the periphery of the tubule to the left, is seen a Sertoliau cell, to the right of which are two spermatogonia. Above, are a number of spermatids and spermatozoa. Fig. 13. Portion of a seminiferous tubule of an adult killed Oct. 20th. X 721. Three spermatogonia of different size are shown near the periphery of the tubule, while three nuclei of Sertolian cells occur nearer to the lumen. Fig. 14. Portion of a seminiferous tubule of an adult killed on Jan. 1st. X 721. Near the periphery, are seen four spermatogonia and two Sertolian cells, while nearer the lumen there appear seven spermatocytes in pre-synapsis and synapsis stages. A de- generating sex-cell is seen at the left. Fig. 15. Two spermatogonia and a Sertolian cell found in the same section as Fig. 14. X 721. This shows one of the largest and .one of the smallest spermatogonia to be found at this stage. togonia are found to be multiplying and transforming into spermato- cytes. Several other stages intermediate between those mentioned,. 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 Anatomische Gesellschaft. Jena : G. Fischer


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