when they exhibit ( i ) type a ( fast ) mobility for glucose-6-phosphate dehydrogenase , ( ii ) phosphoglucomutase type 1 at locus 1 and locus 3 , ( iii ) absence of a y chromosome by fluorescent staining , and ( iv ) possession of a complex of trypsin-giemsa banded marker chromosomes present in known hela cells , then cell substrates regardless of designation should be considered de facto strains of hela .
C1708726
locus
C0007634
cell