title: Low permeation of systemically administered human beta-endorphin into rabbit brain measured by radioimmunoassays differentiating human and rabbit beta-endorphin.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D000918:Antibody Specificity; D001921:Brain / Q000378:metabolism*; D002850:Chromatography, Gel; D004723:Endorphins / Q000032:analysis / Q000378:metabolism*; D006801:Humans; D011817:Rabbits; D011863:Radioimmunoassay; D013045:Species Specificity; D013997:Time Factors; D001615:beta-Endorphin
chemical_list: D004723:Endorphins; D001615:beta-Endorphin