title: Phylogenesis of mast cells. I. Mast cells of the frog Rana esculenta.
mesh_terms: D000818:Animals; D001001:Anura / Q000033:anatomy & histology*; D001202:Ascitic Fluid / Q000166:cytology; D005075:Biological Evolution; D003594:Cytoplasmic Granules; D008407:Mast Cells / Q000032:analysis / Q000166:cytology; D008643:Mesentery / Q000166:cytology; D051381:Rats; D012377:Rodentia; D012701:Serotonin / Q000032:analysis; D013154:Spleen / Q000166:cytology; D013194:Staining and Labeling; D013950:Thymus Gland / Q000166:cytology
chemical_list: D012701:Serotonin