title: Islet histophysiology: evolutionary correlations.
mesh_terms: D000663:Amphibians / Q000033:anatomy & histology*; D000818:Animals; D005075:Biological Evolution; D002196:Capillaries / Q000033:anatomy & histology; D002466:Cell Nucleolus / Q000648:ultrastructure; D002467:Cell Nucleus / Q000648:ultrastructure; D003239:Connective Tissue Cells; D003593:Cytoplasm / Q000648:ultrastructure; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D005399:Fishes / Q000033:anatomy & histology*; D007515:Islets of Langerhans / Q000166:cytology* / Q000294:innervation; D008099:Liver / Q000033:anatomy & histology; D008547:Melanophores / Q000648:ultrastructure; D010179:Pancreas / Q000033:anatomy & histology; D010275:Parasympathetic Nervous System; D012487:Salmonidae / Q000033:anatomy & histology; D013045:Species Specificity; D013194:Staining and Labeling; D014426:Turtles / Q000033:anatomy & histology; D014562:Caudata / Q000033:anatomy & histology