Decreased pericyte process length in the hearts of 1-mo-old proNgf-HA/⁺ mice. (A) Mean pericyte process length in the hearts of 1-mo-old NG2dsRedBAC; proNgf-HA/⁺ mice compared with NG2dsRedBAC; Ngf^+/+ littermates (**, P < 0.01, mean ± SD). (B) Pericyte process length from each individual animal analyzed. 20 pericytes per animal were measured. Pericytes from Ngf^+/+ mice are shown in blue and proNgf-HA/⁺ are shown in red (mean ± SD). (C and D) Representative tracings of pericytes from NG2dsRedBAC; Ngf^+/+ mice (C) and NG2dsRED; proNgf-HA/⁺ mice (D). Bars, 5 µm. Ngf^+/+, n = 5; proNgf-HA/⁺, n = 3.