How does the immune system remember the previous infections?

Answer 1

For survival reasons or otherwise, the immune system would save a "file" of certain intruders and threats based on traits and characteristics. The protein, called Lck, is what "teaches" T-cells (white blood cells that attack viruses and other threats) to identify the characteristics of pathogens, whether clearly or vaguely identified within the body. As a result, Lck helps prevent the body's immune system from being constantly weighed down by a "biological hard drive" remembering all cell and invader statuses.

Answer 2

After an infection has been fought off by the immune system, some of the white blood cells which produced antibodies specific to the infection remain in the body, a form of "memory" or biological record of the disease. This means that if the infection occurs again, those white blood cells are able to reproduce rapidly to combat the infection, faster than if the body had not previously recognized the pathogen and prescribed the produced white blood cells/antibodies.

Answer 3

I think leftover bits and pieces of the dead pathogens are stored in some organelle in the cell. Later, white blood cells can use the leftover pieces to attract the complimentary portions of an enemy cell, effectively tearing it in half.

Answer 4

For survival reasons or otherwise, the immune system would save a "file" of certain intruders and threats based on traits and characteristics. The protein, called Lck, is what "teaches" T-cells (white blood cells that attack viruses and other threats) to identify the characteristics of pathogens, whether clearly or vaguely identified within the body. As a result, Lck helps prevent the body's immune system from being constantly weighed down by a "biological hard drive" remembering all cell and invader statuses.

Answer 5

The immune system is trained to be immune to invaders.

So yes.

Answer 6

no