title: Changes in alpha-fetoprotein concentrations during storage at -73 degrees C.
mesh_terms: D001793:Blood Preservation / Q000379:methods*; D005260:Female; D005615:Freezing; D006801:Humans; D008297:Male; D011863:Radioimmunoassay; D013997:Time Factors; D000509:alpha-Fetoproteins / Q000032:analysis*
chemical_list: D000509:alpha-Fetoproteins