Skip to main content

Table 3 Parallelisms between placental implantation and invasion characteristics in primates, presence and sugar structure of CG or LH, and relative brain masses.

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

Species Implantation characteristics Depth of Invasion Sugar structures, pI Brain mass (%)
Hominids Hemochorial 1/3rd myometrium CG, 8 structures, pI 3.5 2.4%
Advanced simian primate Hemochorial 1/10th myometrium CG, 6 structures, pI 4.9 0.74%
Early simian primate Hemochorial through decidua CG, 5 structures, pI 6.3 0.17%
Prosimian primate epitheliochorial no-invasion No CG produced LH, 3 structures, pI 8.4 0.07%
  1. Table summarizes published data [130, 131, 134, 135, 137, 139, 140, 146].