Cell Biology-- Cytology 71 Comparative Physiology, Animal physiology 44 Fish physiology-- Physiology of fishes 32 Toxicology-- Biology 32 Developmental Biology-- Reproduction-- Growth-- Vertebrate reproductive biology, Life cycle 21 Embryology 18 Immunology-- Pathology 18 Biophysics-- Biology 12 Fish Immunology 11 Vertebrates Anatomy 9 Reproduction physiology-Animals 8 Embryology - Vertebrate 7 Radiobiology-- Biophysics-- Biology 6 Tissue biology and regional physiology-- Histology 6 Cell biology - problems 5 Fishes- Biomechanics 4 Parasite disease 4 Regeneration (Biology) 4 Reproduction-Fishes 4 Cell culture-- Cell Biology 3 Cell growth 3 Comparative Anatomy and morphology-Biology 3 Diseases-- Pathology-- Pathobiology 3 Epithelial tissues 3 Organic pesticides 3 Anatomy and morphology 2 Biomechanics and effects of mechanical forces 2 Cell division-- Mitosis 2 Cloning 2 Comparative Anatomy and morphology-Biology-- Research 2