B cells:a
are produced in the adult spleen.
b. lyse bacterial cell walls by secreting digestive enzymes.
c. can become plasma cells, which produce interleukins.
d. undergo clonal reproduction once activated.
e. stimulate apoptosis.
d
You might also like to view...
A spontaneous reaction
A) has to occur immediately. B) will never occur. C) has an overall positive free energy change. D) could occur but might take a very long time. E) is associated exclusively with homeothermic organisms.
The correct sequence of the stages of viral replication is:
a. Attachment - Synthesis - Penetration - Assembly - Release b. Penetration - Attachment - Assembly - Synthesis - Release c. Penetration - Attachment - Synthesis - Release - Assembly d. Attachment - Penetration - Assembly - Synthesis - Release e. Attachment - Penetration - Synthesis - Assembly - Release
According to public health officials, all of the following may be caused by water pollutants EXCEPT which one?
A) birth defects B) nervous disorders C) miscarriages D) skin rashes E) autoimmune disorders
Which statement correctly describes the relationship between the epiglottis and glottis during swallowing?
A) the epiglottis covers the glottis B) the glottis covers the epiglottis