Laatikainen, T <br/><br/>
Plasma beta-endorphin and the menstrual cycle.  [electronic resource] 

 -  Fertility and sterility  Aug 1985 
 - 206-9 p.  digital 
<br/><br/> Publication Type: Journal Article; Research Support, Non-U.S. Gov't 
<br/><br/><label>ISSN: </label>0015-0282 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adult<br/>Endorphins--blood<br/>Female<br/>Humans<br/>Menstrual Cycle<br/>beta-Endorphin