Fig. 2From: The effects of CRISPR-Cas9 knockout of the TGF-β1 gene on antler cartilage cells in vitroRelative expression levels of TGF-β1 protein. (1) Untreated group. (2) Negative control group. (3) pBOBI-gRNA1 infected group. (4) pBOBI-gRNA2 infected group. (5) pBOBI-gRNA3 infected groupBack to article page