HELP ILL MARK BRAINLIEST! Can anyone help me ?
Question -Imagine that you could send a letter backwards in time . Write a letter to him in which you explain

So does it mean that im going to be like “Hi I’m writing from the future” ? -More important
And if your kind enough the rest is “explain what a gene consists of in molecular terms and explain what DNA and proteins are “u don’t have to but :)

answer: - b cells

explanation: -

there are many types of white blood cells present in our body. one such class of white blood cells are the lymphocytes. the b cells belong to the lymphocyte class of wbcs. the b cells perform their action against the pathogen by producing specialised proteins called as antibodies. these antibodies are produced as and when the b cells encounter pathogens in response to the antigens present on the surface of the pathogen. these antibodies bind to the antigens present on the pathogen and then, target them for destruction by other cells of the immune system.

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.