<prompt> At Primary Health Centre PHC level, vaccines arestored in the -Cold boxDeep freezerIce lined refrigeratorWalk in cold room  <response>: Ans. is c i.e., Ice lined refirgerator o At the PHC level, all vaccines are kept in the small ILR Ice-lined regrigeratorsfor a period of 1 month at temperature of 2degC to 8degC. o At the PHC small DF deep freezer is also used, but small ILR is the main storage equipment. 