Examlex
Which of the following is a utility program that allows you to track the path of a message sent from a client computer to a remote computer on the Internet?
Negative Selection
A process in immunology where self-reactive T or B cells are eliminated during development, preventing autoimmune diseases.
Positive Selection
A process in the immune system whereby cells that recognize a foreign antigen with high affinity are selectively proliferated.
Cold
A decrease in temperature, or a viral infection causing symptoms like runny nose, coughing, and sore throat.
Adaptive Immunity
A subsystem of the immune system that is characterized by the creation of antibodies and the establishment of memory cells, providing long-term immunity against pathogens.
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