en Other Other Letter to the editor Letter to the editor <div style="text-align: justify;">We observed a new structure similar to a blood platelet using transmission electron microscopy methods. This structure was about 5 &micro; in length. It included many mitochondria and &quot;azurophile granulations&quot; (osmiophile granulations) which are typical of human blood platelet. The similarity of this&nbsp;structure to a platelet reveals the high degree of sophistication of Asterids from an evolutionary point of view. As a result, the blood platelets and sea star platelet may have the same embryonic origin. It is obvious that this observation must be completed by genomic studies.</div> 218 219 http://ibbj.org/browse.php?a_code=A-10-305-4&slc_lang=en&sid=1 Michel Leclerc mleclerc45@gmail.com 10031947532846003599 10031947532846003599 Yes 556 rue Isabelle Romée, 45640 Sandillon, France.