Lymphatic capillaries are thin-walled, closed-ended tubes.
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Q73: Newborns can acquire _ immunity through breast
Q74: Plasma cells
A)increase the volume of the blood
Q75: The order in which HIV breaches barriers
Q76: The thymus enlarges after puberty.
Q77: A primary immune response _, and a
Q79: Innate defenses include mechanical and chemical barriers,
Q80: In the cellular immune response
A)B cells produce
Q81: The foreign, or "non-self" substances that trigger
Q82: In active immunity, a person becomes immune
Q83: An injection of synthetic antibodies imparts active
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