The small cell lung cancer antigen cluster-4 and the leukocyte antigen CD24 are allelic isoforms of the same gene (CD24) on chromosome band 6q21

Cluster-4 and CD24 cDNA’s have recently been cloned from the small cell lung carcinoma (SCLC) cell line SW2 and from the erythroleukemia cell line K562, respectively. The only difference in the coding