Which activity only requires hand eashing after the activity is completed

Which of the following is a nonspecific defense against pathogens? - b cells - antibodies - t-cells - inflammation

Which of the following are considered general purposes of performing pulmonary function tests (pfts)? 1. the functional status of the lungs 2. the diffusion characteristics of the alveolar-capillary membrane 3. how much and how fast gas can be moved into and out of the lungs 4. the specific diagnosis of pulmonary disease

There are blank calories in a gram of carbohydrate