What would be the outcome if a naive B cell were to bind to pathogen coated with specific antibody made by an effector B cell in a primary immune response using Fc?RIIB1, and simultaneously bind to the same pathogen using its B-cell receptor?
a. a positive signal leading to the production of low-affinity IgM antibodies
b. a positive signal leading to isotype switching and the production of IgG, IgA, or IgE antibodies
c. a positive signal leading to somatic hypermutation and the production of high-affinity IgM antibodies
d. a negative signal leading to inhibition of the production of low-affinity IgM antibodies
e. a negative signal leading to apoptosis.
D
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Fill in the blank(s) with correct word
Hernia of the meninges and spinal cord through a defect in the vertebra:
A) meningomyelocele B) meningioma C) myelocele D) myeloma
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A. actinic keratosis B. basal cell C. squamous cell D. melanoma
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A) hiatal hernia. B) volvulus. C) paralytic ileus. D) inguinal hernia.