c("cell type: liver cancer", "cell line: SMMC-7721", "passages: P3")
c("cell type: liver cancer", "cell line: SMMC-7721", "passages: P3")
c("cell type: liver cancer", "cell line: SMMC-7721", "passages: P3")
c("cell type: liver cancer", "cell line: SMMC-7721", "passages: P3")