Some animals migrate, or seasonally move to a different place. In some bird populations, such as Canada geese, some birds migrat
e and some stay in the same area year-round. Migration can enhance the survival of individuals because it —
exerts a lot of energy.
exerts a lot of energy.
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5000 units of antigens are present in 0.5 mL of the mumps virus vaccine.
Volume of the vaccine after dilution with water = 2 mL
0.5 mL has 5000 units antigen. So when 0.5 mL was diluted to 2 mL, the final vaccine after dilution would contain 5000 units of antigen.
Units of antigen present in 1 mL vaccine sample
=
Therefore, 2500 units of the antigen will be present in each milliliter, if 0.5 mL of the vaccine is diluted to 2 mL with water for injection.