Un Agente Oportuno / An Opportune Agent: Cuando La Penicilina Entra En Acci鏮 / When Penicillin Takes Action

Un Agente Oportuno: Cuando la Penicilina Entra en Accion

　　This is not a spy story, but it features agents who gather information to eliminate invaders. This is not a story: it is the history of a real person seen at microscopic level.nbsp;With an imaginative text and extraordinary illustrations, the reader is introduced to the functioning of the body's immune system and the importance of preventing illnesses.