An Experimental Treatment Cultures Stem Cells from a Newborn's Umbilical

Multiple Choice

An experimental treatment cultures stem cells from a newborn's umbilical cord. In a lab dish, the stem cells give rise to type II cells, which in turn give rise to more type I cells. These stem cells will be added to the extracellular matrix of a donated lung which has been stripped of its respiratory cells. How will the cells act after they grow in the donated lung?

A) The type I cells will secrete surfactant and the type II cells will form the respiratory membrane in the alveoli.
B) The type II cells will secrete surfactant and the type I cells will form the respiratory membrane in the alveoli.
C) Both type I and type II cells will produce surfactant.
D) The stem cells will directly replace alveoli.