What evidence did scientists use to find and identify the influenza virus from 1918?

Which line of defense does the skin belong to? What happens to your eyes if you sleep in your contacts? Can you still lactate 6 years after childbirth? How is nutrients and oxygen transferred from a mother to her developing fetus? How many calories should a 5' 11 210 pound man eat with high blood sugar? Is it true that typhoid Mary killed so many people by not washing her hands before she made food for other people? What is causing your menstrual cycle to be brown? What type of antibotics treat strep throat? What problems does inbreeding cause? Can spitting transfer some diseases? Is a physical change A. Forming a mixture B. Burning wood C. Food turning into waste in the intestines D. Turning solid sodium and chlorine gas into salt? Who do you see for a hemorrhoid? What parts of the brain ultimately plan and coordinate complex motor activities? How divides skull in our body? What does it mean if Red Blood Corpcells are present in the urine? Is it possible to cure yeast infection for men without any medication? Can you get vomiting and diarrhea from the flu shot? What is RML pneumonia? Life expectancy if drinking and you have stage 4 cirrhosis of the liver and hepatitis C? Is female friendship declining ALL over the world?