“…c.) . The size of the parathyroids, and probably also the production of the parathyroid hormone, are increased in Ca starvation, and removal of the parathyroids is followed by more severe symptoms in Ca deprived animals than in normal animals (Greep, 1948;cf. Tornblom, 1949), indicating that these glands are at least in part responsible for the relative independence of the blood Ca level on Ca intake (cf.…”