The effect of the association of two water-soluble porphyrins on a tumor cell line of human larynx (HEp-2) with visible light - Carvalho, Valéria C M; Melo, C A S; Bagnato, Vanderlei Salvador; Perussi, Janice Rodrigues (Reunião Anual da Sociedade Brasileira de Bioquímica e Biologia Molecular, 2000)