SIRPA did not inhibit infection by two viruses that enter cells from the plasma membrane, herpes simplex virus-1 (HSV-1) and murine leukemia virus (MLV), or by mouse norovirus (mNoV), which enters cells via a cholesterol- and dynamin-dependent, but pH-, clathrin-, caveolae-, and macropinocytotic-independent pathway [10,11]. This evidence concerns the gene SIRPA and infection.