“…frog, calf, cat, rabbit, ferret, mouse, rat, human (Argibay et al, 1988;Bean, 1989;Nuss and Houser, 1993;Yuan and Bers, 1994;Yuan et al, 1996;Nascimento, 1996;Li et al, 1999;Chen et al, 2002) but has been described in modest amounts in guineapig (Mitra and Morad, 1986;Sipido et al, 1998a). I CaT is present in atrial myocytes from frog, dog, cat, rat and guinea pig (Wu and Lipsius, 1990;Romanin et al, 1992;Xu and Best, 1992;Alvarez et al, 1996;Yue et al, 1999), but not human (Ouadid et al, 1991), heart.…”