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Figure 3 | Reproductive Biology and Endocrinology

Figure 3

From: New discoveries on the biology and detection of human chorionic gonadotropin

Figure 3

Outline of the structures of the 15 common hCG variants present in serum and urine samples in either pregnancy, gestational trophoblastic disease or other malignancy. Numbers refer to subunit polypeptide amino acid numbers (as in 1 and 145 in the 145 amino acid long β-subunit), O refers to O-linked and N to N-linked oligosaccharides. OO and NN refer to large or hyperglycosylated oligosaccharides. α is α-subunit and β is β-subunit. βCTP is the C-terminal segment (residues 93–145) on the regular or hyperglycosylated hCG β-subunit.

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