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Greeting is Important

Conversation skills are very important and each conversation starts with a greeting. These greetings are mostly verbal. People exchange greetings everyday regardless of culture, age, gender and country. But in […]

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Basics of Vaccines

Latin word Variolae vaccinae is the origin of the word vaccine. In 1798 for the first time Edward Jenner developed first vaccine to prevent smallpox. Now vaccine is a biological […]

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