TRPM5 and viral infectious disease: The number of tuft cells was reduced but not significantly following viral infection in the lung parenchyma of Trp63CreERT2;Trpm5-/-;R26Ai14 mice as compared to control mice (Trp63CreERT2;Trpm5+/-;R26Ai14) (P>0.05, Figure 5—figure supplement 1A).