The miR-29 family members can be targeted in mouse pups directly injected with an antimiR. Either a scrambled antimiR (open symbols) or an antimiR directed against miR-29a-3p (closed symbols) was administered by intraperitoneal injection (25 mg kg−1) to newborn mouse pups on the day of birth. Organs were harvested from mouse pups on the seventh day of life: (B) brain, (H) heart, (K) kidney, (Li) liver, (Lu) lung. Total RNA pools were screened by real-time RT-PCR for (A) miR-29a-3p, (B) miR-29a-5p, (C) miR-29b-3p, and (D) miR-29c-3p. The miR steady-state expression levels are described by the mean ΔCT ± SD. (n = 5–6 animals, per group; each symbol represents an individual animal), where ΔCT = CT(Rnu6) − CT(miR of interest). Mean values were compared between the scrambled versus miR-29a-3p-specific antimiR-treated mouse pups by unpaired Student's t-test. (*) P < 0.05; (***) P < 0.001; (****) P < 0.0001.