A disadvantage of embryonic stem cells is that they
a. can provoke immune responses in the recipient.
b. can divide a very limited number of times.
c. can differentiate into a very limited number of tissue types, most of which are not very useful in treating illness and injury.
d. usually carry too many mutations to be practical in treating injury and illness.
Question 2
Pluripotent stem cells are derived from
a. adult stem cells.
b. umbilical cord blood.
c. blastocysts.
d. cells from the cornea of the eye.