Krill oil comes from krill, tiny shrimp-like creatures that live in very cold ocean waters. Studies show that krill oil might have health benefits similar to those of fish oil. Krill oil contains EPA and DHA, the same omega-3 fatty acids in fish oil, although usually in smaller amounts. The effects of krill oil have not been researched as thoroughly as those of fish oil. But a few preliminary studies suggest that krill oil could be superior in some ways.
A WBC count is a test that measures the number of white blood cells in your body. This test is often included with a complete blood count (CBC). Your blood contains a percentage of each type of white blood cell. Sometimes, however, your white blood cell count can fall or rise out of the healthy range.
White Blood Cells. White blood cells (WBCs) are the cells in your body that protect you from infection. They fight off and destroy the bacteria that cause infection. When your white blood cell count is low the common signs of infection may not be present.