Vaccines contain either killed or weakened forms of disease-causing bacteria or viruses, or components of these that stimulate a response by the body’s immune system, which then protects against the development of disease. In the late 19th century, microbiologists began to grow bacteria in the laboratory. The early bacteriologists tried to mimic as closely
Questioning the link between HPV and Cervical Cancer – A presentation by Vratesh Srivastava एचपीवी और सर्वाइकल कैंसर के बीच संबंध की
