White blood cells (WBCs), also called leukocytes or leucocytes, are the cells of the immune system that are involved in protecting the body against both infectious disease and foreign invaders.All leukocytes are produced and derived from a multipotent cell in the bone marrow known as a hematopoietic stem cell.onocytes and neutrophils are phagocytic. The number of leukocytes in the blood is often an indicator of disease, and thus the WBC count is an important subset of the complete blood count. The normal white cell count is usually between 4 and 11 Ã 10 9 /L.
adjective. The definition of perky is someone who is cheerful, peppy and self-confident. A smiling, happy cheerleader with lots of energy is an example of someone who might be described as perky.
It's the difference between an old married couple with a gleam in their eyes, and Ashton and Demi. (And in fact, Chris Kimball and his co-host Bridget Lancaster, flirt in the most peculiarly surreptitious ways. Chris and his co-host, Bridget, are totally doing it, asserts one of the show's blogging fans.) By extension ATK is saying, look, we'll give you the recipe, you do the rest. For those in the audience who still need all the other embellishments to know they're enjoying themselves: Get a life.