Introduction: Today we cannot imagine modern health care of the population without enough blood and blood component reserves. Recruiting new, young blood donors and keeping the regular donors is the key to securing safe blood in sufficient quantities. Educating and motivating the young population has...
从古至今,闪亮的圆头顶都是智慧的象征, but despite this, many balding people still wish their hair would return. 但是尽管如此,很多秃顶的人还是希望他们的头发还能长回来。 Scientists have long pondered, 科学家们思考良久, "Why do some people lose their hair, and how can we bring it back?" “...
White blood cells, also known as leukocytes, repel or destroy invaders. Somewhite blood cells(lymphocytes) manufacture molecules known as antibodies that tag viruses and bacteria for destruction, while others called neutrophils and macrophages (literally "big eaters") engulf bacteria, fungi and parasite...
On the other hand, people with blood type O do not produce either antigen, which makes them universal donors, 另一方面,O型血的人不生产任何一种抗原,这就使得他们成为了大众捐献者, but will cause their immune system to make antibodies that reject any other blood type. 但这也会导致他们的免疫系...
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Why do some people hate redheads? If you have ever experienced inexplicable ginger hate, this page may be just for you! If you can relate, leave your comments so others don't feel alone.
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if it does, next time you yawn in company, don't feel too embarrassed. you're just showing off your people skills . 词汇表 contagious会传染的 motor肌肉运动的,运动神经的 cortex (尤指大脑或其他器官的)皮层 involuntary不由自主的 physiological生...
Is Venous Blood Blue In Color? Contrary to what many people think, the blood in our veins, i.e., deoxygenated blood, is not blue. In fact, no kind of human blood is blue. If anything, deoxygenated blood is even redder than regular, oxygenated blood. If you have ever had your blood...
Why do we have different blood types? Scientists estimate that blood types have been around for at least 20 million years. But doctors have only known about them for the last 116 years.Before 1900, countless people died after they were injec...