Immunoelectron microscopic localization of LHCPs in dark-grown cells of C. reinhardtii exposed to light for 6 h at 25°C (a) without or (b) in the presence of 200 μg chloramphenicol ml-1. The experimental conditions were described previously . Bound antibodies were detected with protein A conjugated to 10-nm gold particles . c, chloroplast; G, Golgi; m, mitochondrion; n, nucleus; v, vacuoles. The bar = 0.5 μm.