TY - RPRT TI - A decrease in the metabolic clearance rate of progesterone in the coypu during pregnancy. AU - D V Illingworth AU - R B Heap PY - 1971 DO - 10.1530/jrf.0.0270492 UR - https://pubmed.ncbi.nlm.nih.gov/5133632/ ID - 5133632 ER -