“Pretreatment with 10−8 M … osteoclast‐like cell formation in unfractionated mouse bone cell cultures stimulated by 10−8 M human (h) …) (1–34), 10−8 M hPTH‐related protein (1–34) and 10−6 M prostaglandin E2, but not by 10−8 …‐dihydroxyvitamin D3 (1,25(OH)2D3).”