BCL2 and neoplasm: The expression level of the antiapoptotic protein Bcl-2 in the stromal cultures obtained was heterogeneous: in some tumour stromal cultures (L2T, L3T, L7T, L8T, L10T, L11T and E1T) the Bcl-2 expression was upregulated, whereas in some others (L1T, L4T, L5T, L9T and L13T) downregulated.