Examining normal tissues and tumors from females heterozygous for isoenzymes of the sex-linked G6PD gene demonstrated that tumor cells from such individuals express only one form of G6PD, whereas normal tissues are composed of a nearly equal mixture of cells expressing the two different phenotypes.
O exame de tecidos normais e tumores de femias heterocigotas para isoenzimas do xene ligado ao sexo da G6PD demostrou que as células tumorais deses individuos expresan só unha forma de G6PD, mentres que os tecidos normais están compostos dunha mestura case igual de células que expresan os dous fenotipos diferentes.