Fig. 8. The effects of the autonomic secretagogues isoproterenol (ISOP) (A) and carbamylcholine chloride (CARB) (B) on the amount of phosphatidylcholine secreted as a percentage of basal secretion from alveolar type II cells of 30- and 70-day-old Macropus eugenii. An asterisk indicates a significant increase above basal secretion (P<0.05). A double dagger indicates a significant decrease in agonist-stimulated secretion between 30- and 70-day-old joeys (P<0.05). The sample size of each group is indicated above each column. Values are means ± S.E.M.
