Since Moc2 tumors are known to have a very limited infiltration of CD8 T cells into the tumor environment19,20 and they have a very limited number of photoconverted cells moving from the tumor to the TdLN, we investigated whether the number of photoconverted CD8 cells in the TdLN was directly linked to the number of CD8 T cells in the tumor. Here, CD8A is linked to neoplasm.