Menaker, M <br/><br/>
Extraretinal light perception in the sparrow. II. Photoperiodic stimulation of testis growth.  [electronic resource] 

 -  Proceedings of the National Academy of Sciences of the United States of America  May 1968 
 - 146-51 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0027-8424 
<br/><br/><label>Standard No.: </label>10.1073/pnas.60.1.146  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Blindness<br/>Light<br/>Male<br/>Organ Size<br/>Perception<br/>Periodicity<br/>Sensory Receptor Cells<br/>Testis--growth & development