Cells at Work! (2018)

S01E03 Influenza

Naive T Cell patrols the body, on the lookout for influenza virus spread. Yet having never faced a real enemy, he's utterly paralyzed by fear. In the end, he runs away from the battlefield where White Blood Cell (Neutrophil) and the seasoned Killer T Cells are locked in combat. Overwhelmed with self-hatred, Naive T Cell is approached by Dendritic Cell, who offers him gentle, reassuring words.