HealthUpDaily: Health and Medical Analysis

lockdown is going on and everyone is stay at home.They are watching movies and webseries for entertainment. I know entertainment is necessary for us but we should use this important time to learn new skills and knowledge.  I was trying to learn something new for a few days, then I was looking for some free courses on internet, I found free courses that are being taught by many recognized universities with certificate which is helpful for me, then I thought that I should share these courses with my friends. So in today's article, I'll talk about all the courses and sites that will teach you something new which is helpful for you. ◆ Free Online Courses By Harvard University : Harvard University is one of the most famous university in the world.  All students have a dream to study in that university.  Millions of people apply for it, but for some reason they are not able to study there.  Due to this, Harvard University has started an initiative, it wants

◆ How scientist develops vaccine and how vaccine works? ● First of all they take a pathogen such as virus or bacteria then they weaken it so it no longer makes us sick the result is known as an antigen and forms the core of the vaccine. When we're injected with the antigen then our immune system response by producing antibodies against this antigen. Antibody is a protein present in our plasma this proteins fight with germs naturally so when we're exposed to real germ in future then our body recognize it and destroy it quickly before it makes us sick. This is traditional method to develop a vaccine. Now many scientist develop RNA based vaccine and use plasma therapy to treat patient. In RNA based vaccine we enter RNA in cell they form protein which is similar to antigen of virus and then our immune system produce antibodies against this protein. In plasma therapy we take plasma from a person who overcome and cure from virus because his body already produced antib