Which of the following are received at and air temp of 45°F (7°C) and cooled to 41°F (5°C) or lower within 4 hours? Clams Oysters Milk All of these are correct

Answercerebrospinal fluid;

Immunization is the introduction of a foreign substance to provoke  the immune response system.  immunizations are the same as vaccinations. it introduces foreign (but dead/ weakened) illnesses to train the body to fight against them. specific viruses and bacteria have specific antigens, antigens act sort of like name tags. these name tags the immune system recognize what's dangerous to the body and what's safe. 

What are the selections? if you give me the them i can try to you out.

Bor d i think. hopefully this