Table 1

Effect of adrenoceptor antagonists on phenylephrine-mediated inhibition of [³H]thymidine incorporation

	α_1B	α_1D
Control	100	100
PE alone	44 ± 1	17 ± 4
PE ⁺prazosin	111 ± 23	103 ± 7
PE ⁺ yohimbine	52 ± 8	20 ± 2
PE ⁺ propranolol	59 ± 13	19 ± 1

Data are presented as percentage of radiolabel uptake in unstimulated cells (control) and are the means ± S.E.M. of three experiments performed in each cell line.