White blood cells are produced in the bone marrow. They are released into the bloodstream and travel wherever they are needed. Low levels of neutrophils occur when the bone marrow cannot replace them as fast as needed. In babies, the most common cause is infection. A very severe infection may cause neutrophils to be used up quickly. It may also prevent the bone marrow from producing more neutrophils. Sometimes, an infant who is not sick will have a low neutrophil count for no obvious reason.
The Mikoyan MiG-29 (Russian: Ð¼Ð¸ÐºÐ¾ÑÐ½ Ð¼Ð¸Ð³-29; NATO reporting name: Fulcrum) is a fourth-generation jet fighter aircraft designed in the Soviet Union.
Antonov An-22 Antei. Antonov An-22 Antei is ranked eighth as the largest plane. Antonov An-22 Antei is the worldâs heaviest aircraft, until the advent of American C-5 Galaxy and later the Soviet An-124. This aircraft first appeared outside the Soviet Union in 1965 Paris Air shows.