CD44 and acute lymphoblastic leukemia: Predominant expression of a specific CD44 variant such as CD44v8-10 has been reported in several human carcinomas.17 To explore the implication of CD44 splice variants in ULMW-HA-triggered inhibition of thymidine uptake, we performed reverse transcription-PCR analysis of CD44 splice variant RNAs in B-precursor and T-ALL cell lines as described previously.17 The colorectal carcinoma cell line HCT116 was used for positive control.