Author information: (1)Dr. von Hauner Childrens' Hospital, Ludwig Maximilians University, Munich, Germany. Pulmonary surfactant is a complex and highly surface active material composed of lipids and proteins which is found in the fluid lining the alveolar surface of the lungs.
You must meet several criteria to qualify for the child and dependent care credit. To qualify, you must meet all of the following: 1  You (and your spouse, if you are married filing jointly) must have earned income for the tax year.  You must be the custodial parent or main caretaker of the child or dependent.
To claim a deduction as a dependent, your child or stepchild must be under age 19 as of the end of the tax year unless he is in school. If your child is a full-time student for a minimum of five months out of the year, he must be under age 24 at the tax year's end. Your child must live at your residence for over six months of the year to qualify for your deduction.