Identification of a novel 5-HT4 receptor splice variant (r5-HT4c1) and preliminary characterisation of specific 5-HT4a and 5-HT4b receptor antibodies - Ray, A M; Kelsell, R E; Houp, J A; Kelly, F M; Medhurst, A D; Cox, H M; Calver, A R (Eur J Pharmacol, 2009)