CD44 and squamous cell carcinoma: Human dermal fibroblasts and HeLa human cervical carcinoma cell line predominantly expressed CD44s. CD44 transcription in other squamous cell carcinoma (SCC) cell lines, including KU8, DJM-1 and A431, was similar to that observed in the spontaneously immortalized normal human keratinocyte line HaCaT and in the NHKs cultured with FCS, although CD44s expression remained unchained.