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Representative tracing showing relaxation of cavernosal smooth muscle induced by SNP (1 µM) in WT (A) and DBA (B) mice after pre-contraction with phenylephrine (PE, arrow). (C) Graph compares the magnitude of SNP induced relaxation in WT (black circles) and DBA (gray triangles) mice. [n = 9 for WT and n = 10 for DBA cavernosal tissues, p = 0.302, unpaired t-test].
