“…During the last years a lot of studies on NOS and NO have been performed (Mizukawa et al 1989, Mizukawa 1990, Dawson et al 1991a, 1991b, 1994, Hope et al 1991, Rodrigo et al 1994, Kullo et al 1997, Soares et al 2003, Marino and Cudeiro 2003, Papantchev et al 2003, 2006, Sears et al 2004, Seyidova et al 2004. Nevertheless there are little data about the neuronal Nitric oxide synthase immunoreactive (nNOS-ir) neurons and fibers in the dorsal claustrum (DC) of a cat.…”