A primary reason for needing a new vaccine for influenza each year is that there could be mutation of surface proteins leading to a new outbreak
<h3>What is antigenic drift?</h3>
Antigenic drift is a phenomenon that causes small changes or mutations in the genes of influenza viruses leading to changes in their surface proteins of the virus, which are HA (hemagglutinin) and NA (neuraminidase).
For this reason, new influenza vaccines are produced yearly to alter the effects that may emerge as a result.
Thus, a primary reason for needing a new vaccine for influenza each year is that there could be mutation of surface proteins leading to a new outbreak
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Answer:
The factor favoring filtrate formation at the glomerulus is the <u>glomerular hydrostatic pressure.</u>
Explanation:
glomerular hydrostatic pressure is the pressure of the blood in the glomerular capillaries.
The pressure generated by the fluid against a surface is called the Hydrostatic pressure . The blood in glomerulus generates the glomerular hydrostatic pressure , that forces the fluid out of glomerulus into the glomerular capsule .
Fluid in glomerular capsule generates pressure that pushes the fluid out of glomerular capsule back into the glomerulus , opposing glomerular hydrostatic pressure . this is called the capsular hydrostatic pressure .
The fluid exerts pressure in the opposite direction , and hence , the net movement of the fluid will be in the direction of lower pressure .
Answer:
The answer is: very unresponsive
Explanation:
they won’t give an answer as to why
Best answer would be
C. A reference to a scientific study that supports this claim
