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11h 44min, jan 11, 1960 y - Hillman y colaboradores se dieron a la tarea de fabricar una vacuna contra las hepatitis tipos A y B.
Added to timeline:
14 Nov 2017
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EV3 ESPINOZA Meza David Antonio
linea del tiempo de la vacunación
Date:
11h 44min, jan 11, 1960 y
Now
~ 64 years ago