The edge information of cell image is very useful, which is the basis of cell image segment, it can affect the correctness of cell image recognition and analysis directly.
T cell can only recognize specific antigenic peptide-MHC complex on antigen-presenting cell. This is MHC restriction in antigen recognition of t cell.
细胞只能识别抗原提呈细胞表面特定的抗原肽MHC分子复合物，这就是T细胞抗原识别的MHC限制。
3
Cell adhesion molecules (CAMs) are the key cellular molecules, which mediates many biologic actions such as cell-cellrecognition, cell-matrix adhesion and in early vertebrate embryos.