EFFECT OF CORONAVIRUS-19 ON MENTAL CONDITION OF INTERNATIONAL STUDENTS IN CHINA



Euspermatozoon structure and euspermiogenesis in Cerithidea cingulata (Gmelin, 1791) (Caenogastropoda : Potamididae)

The ultrastructural characteristics of euspermatogenesis and mature euspermatozoa of Cerithidea cingulata are described.Euspermatogonia possesses a large round concentric nucleus with one or two nucleoli.The spermatocyte is characterized Deck Wheels by the abundant cytoplasmic organelles and eccentric nucleus with chromatin distributed throughout a

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