CD8A and neoplasm: Conversely, CD8+CD103- T cells (non-TRMs: Figure 1C, red) and CD8+CD103+ TRMs (Figure 1C, black arrows), which appear black due to the overlay of red (CD8) and green (CD103) signals, were primarily distributed within tumor stroma, extending into the adjacent tumor epithelium (Figure 1C, red dotted line).