in a previous study ( petersen and van deurs , cancer res. , 46 : 2013-2020 , 1986 ) we have defined a population of cep in vivo and in vitro , appearing in about 50 % of primary carcinomas , by a cytochemical reaction for reduced nicotinamide adenine dinucleotide phosphate neotetrazolium reductase .
C1518174
cep
C1335475
primary carcinomas