IN NATURE some time ago (115, 155; 1925) Dr. Bidder raised again the interesting fundamental question of the cause of normal death in aquatic animals, and stated that so far as he knew there was no ...

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Germ cell development and oogenesis represent central processes in the reproduction of invertebrates, exhibiting remarkable diversity in cellular architecture, developmental mechanisms and functional ...

Invertebrates dominate the animal kingdom, making up 97 percent of all creatures. These animals, lacking a backbone, display incredible diversity. From microscopic mites to giant squid, their ...