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In situ hybridization to sections of murine fetus and placenta hybridized with a [35S] antisense (Upper) and sense (Lower) riboprobes to (A) leptin and (B) common extracellular domain of the OB-R mRNA. PL, placenta; L, lung; LM, leptomeninges; V, vertebrae; R, ribs; F, femur; HL, hindlimb; PI, primordium of incisor teeth; NT, nasal turbinate; CD, cochlear duct and HF, hair follicle. (×2.7.)
