title: Handling sera for tumour marker studies.
mesh_terms: D002272:Carcinoembryonic Antigen / Q000032:analysis*; D005260:Female; D006801:Humans; D009369:Neoplasms / Q000097:blood / Q000175:diagnosis*; D011247:Pregnancy; D013048:Specimen Handling / Q000379:methods*; D000509:alpha-Fetoproteins / Q000032:analysis*
chemical_list: D002272:Carcinoembryonic Antigen; D000509:alpha-Fetoproteins