Antigens are any molecules that elicit adaptive immune response. Antigens protrude from pathogens or other intruding substances. Antibodies are proteins found in blood plasma that attach to one particular kind of antigen and help to counter its effects.
Answer:
Margaret Chan,
Vikram Patel
Francis S. Collins
Arunachalam Muruganantham
Tom Frieden
Answer:
Rugby is a contact sport that is played between two opposing teams made up of 15 players each, with the aim of taking an oval ball to the rival's goal line. The ball cannot be passed forward, but always backwards, so it is important that the players have forward strokes to advance with the ball, which can be touched with any part of the body, although in the game the hands are mostly used. At the same time, it is a very hard and rough sport, since impacts through tackles are the main form of defense, with which there are usually certain injuries in the development of matches.
It is a sport of British origin, although it is also very popular in France, Oceania and Argentina. Being such a massive sport, it does not allow us to discover a culture so deeply rooted in the sport itself, although the chivalry of the game is a factor attributed to British culture.
