Several types of cells in the immune system engulf microorganisms via phagocytosis. 1  Neutrophils. 2  Neutrophils are abundant in the blood, quickly enter tissues, and phagocytize pathogens in acute inflammation. 3  Macrophages. 4  Macrophages are closely related to monocytes in the blood.
Snowfall in Flagstaff ranged from 5 inches to 9 inches, with 8.6 inches at Flagstaff Pulliam Airport. Official record-keeping on Flagstaff's weather began on September 9, 1898, and a 30-year period ending in 2000 has been used in the last decade to determine what is average weather-wise.
Less than half of years also get a little snow in May. Flagstaff is normally free of snow every year from June to September. How Many Snowstorms Flagstaff Gets. Most days of snowfall in Flagstaff leave at least an inch of fresh snow on the ground. For 12 days a year on average, the amount of new snow totals at three inches or more. Snowstorms of over five inches a day normally occur seven times a year.