Leeuwenhoek's Spermatazoan

First depiction of sperm cells, by Antonie van Leeuwenhoek.
<div class="capcredit">Credit: <i>Philosophical Transactions</i> (1679)</div>
<div class="capbacklink">See: "<a href="http://www.world-sex-records.com/search/node/Leeuwenhoek">First discovery of sperm</a>"</div>
First depiction of sperm cells, by Antonie van Leeuwenhoek.
Credit: Philosophical Transactions (1679)
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