Fig. 1: Tryptophan deficiency suppresses the growth of some cancer cells.
From: ERRFI1 induces apoptosis of hepatocellular carcinoma cells in response to tryptophan deficiency

A The effects of tryptophan deficiency on HCC cells growth were analyzed by cytometry assay. **P < 0.01; *P < 0.05. B The effects of tryptophan deficiency on HCC cells growth were analyzed by colony formation assay. **P < 0.01; *P < 0.05. C The effects of tryptophan deficiency on breast cancer cells growth were analyzed by cytometry assay. **P < 0.01; *P < 0.05. D The effects of tryptophan deficiency on lung cancer cells growth analyzed by cytometry assay. **P < 0.01; *P < 0.05. Trp tryptophan.