Samples of fluid from the lungs and bronchial tree can be examined under the microscope and fluid can be cultured for infection. (siriusdog.com)
To test this age - old theory, Seeley and his colleagues analyzed samples of fluid taken from the knee joints of healthy men and women, ages 18 to 35, both before and after a 30 - minute run. (health.com)
You can also use the ultrasound as a guide to obtain samples of fluid, such as urine or abdominal / thoracic effusion. (southernazvets.com)