Figure 2
From: Placental expression of pituitary hormones is an ancestral feature of therian mammals
LH-β expression in the tammar wallaby placenta. mRNA gene expression in placental tissue from days 18 to 25 of pregnancy in the tammar wallaby. The isolation and expression of this pituitary gene in the marsupial placenta suggests that orthologues of these genes may be found in the placentas of all mammals. (BYS: bilaminar yolk sac; La: DNA Ladder; TYS: trilaminar yolk sac; -ve: negative control).