How Do Mosquito Bites Itch?

How Do Mosquito Bites Itch?
摘取自[Tell Me About The World] McGraw Hill Children%26#39;s Publishing
The itchy welt that forms on the skin when a person has been "bitten" by a mosquito is, in fact,
an allergic reaction to t 神奇發熱衣發熱6℃he insect%26#39;s saliva. Saliva injected into the skin prevents its victim%26#39;s
blood from clotting. A mosquito cannot actually bite because its jaws do not open. The middle
of a mosquito%26#39;s proboscis has six nee 發熱衣dle-like parts, called stylets. These are protected by the
insect%26#39;s flexible lower lip, or labium, most of the time. When a mosquito "bites," the lip slides
out of the way like a sleeve as the stylets puncture the sk 發熱6度C(6℃)in. The channels made by the stylets
allow saliva to flow into the wound. This allows the insect to sip blood more easily. Only
female mosquitoes bite. Only those of a few of the 3,000 or more species attack animals and< 秋冬型保暖內衣 br>