MAP1LC3A and infection: Studies have shown that autophagy can cause an increase in LC3 expression.24 To investigate whether autophagy occurs after S aureus infects bovine macrophages, we used Western blot to assess the expression of LC3‐II at different time points (0, 0.5, 1, 1.5, 2, 2.5, 3, 4 hours) after infection.