Secreted in AML-MSCs, not secreted in R-MSCs: 255 proteins, significant only 3 proteins—UCL1—Mucin-like protein 1; May play a role as a marker for the diagnosis of metastatic breast cancer; SSBP1—Single-stranded DNA-binding protein, mitochondrial; this protein binds preferentially and cooperatively to ss-DNA. This evidence concerns the gene MUCL1 and acute myeloid leukemia.