PREFERENTIAL ELIMINATION OF LEUKAEMIC CELLS BY PORPHYRIN-INDUCED LASER PHOTOSENSITIZATION T. AHMED, S. GINGRICH, R. DREYFUS, Z. ARLIN, J.D. LUTTON, J.W. CHIAO et N.G. ABRAHAM J. Phys. Colloques, 48 C7 (1987) C7-297 DOI: 10.1051/jphyscol:1987767