Matching Pairs 1.22 Inmune system concepts (D)Online version Some inmune system concepts by Jorge Arizpe 1 These are part of the second barrier 2 Any external biological agent that can harm the host 3 Sustancia que al introducirse en el organismo induce en este una respuesta inmunitaria, provocando la formación de anticuerpos. 4 This are pathogens that need to live inside a cell. 5 They are the first barrier 6 These are part of the Third barrier 7 We acquired this type of inmunologycal defense along aour lives. 8 Pathogens that live outside the cells. 9 We are born with this type of inmunologycal defense.