When our body encounters first time with a pathogen. Then the first time low intensity response is known as :-

When the body encounters with the same pathogen for the second time, the response is

Urea was synthesised for the first time by

Cell was descovered for the first time by

The virus discovered for the first time was

During first encounter with the same pathogen, our body elicits a response which is

During first encounter with the same pathogen, our body elicits a response which is

When our body is exposed to antigen for second time a relatively faster and high intensity immune response is produced. What is not true about this response?