<b>Phosphatidylcholine</b>, <b>ptd-cho</b>, <b>PC</b> from <b>Lecithin</b> structure<br>Choline is blue part.
<a href="//commons.wikimedia.org/wiki/User:PHENTANYL" title="User:PHENTANYL">phenida@PHENTANYL</a>
2010-10-25
<span class="int-own-work" lang="en">Own work</span>