human chorionic gonadotropin (hcg) glycoprotein hormone, 3d rend

human chorionic gonadotropin hcg hormone egg fertilized pregnancy test dip urine conception glycoprotein morning sickness pregnant gynaecology ovulation ovary fertility blood molar immunoassay level vitro fertilization ivf performance enhancing sports doping structure peptide protein amino acid molecule polypeptide polymer atoms science scientific disease health molecular model 3d rendering illustration