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  Indian J Med Microbiol
 

Figure 1: The 1668 drawing of Regnier De Graaf illustrating his dissection of the human testis and epididymis. In the enlargement panel note that De Graaf had dissected the epididymis down to a single tubule. Not knowing of spermatozoa, he still believed the epididymal tubule helped in some way to complete the substance from the testis that was vital for the induction of pregnancy in the female. Reproduced from De Graaf R1.

Figure 1: The 1668 drawing of Regnier De Graaf illustrating his dissection of the human testis and epididymis. In the enlargement panel note that De Graaf had dissected the epididymis down to a single tubule. Not knowing of spermatozoa, he still believed the epididymal tubule helped in some way to complete the substance from the testis that was vital for the induction of pregnancy in the female. Reproduced from De Graaf R<sup>1</sup>.