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.
Flagstaff enjoys 161 sunny days per year, 101 partly cloudy days (40 - 70% cloud cover) and 103 cloudy days (80 - 100% cloud cover). Be sure to pack a brimmed hat, comfortable sturdy shoes, a camera and a high SPF sunscreen year-round.