00:01
All right, so in this question, we are being told about an individual who presented with an influenza infection.
00:08
And at that current doctor visit, their blood was drawn.
00:12
We are comparing this blood draw to blood that was drawn four months after they were exposed to this influenza virus and how the presence of antibodies compare in their blood draw.
00:24
So let's say our influenza little invader looks something like this.
00:35
And obviously once we're infected and it kind of reaches our third line of defense so our specific immune system like i said specifically our third line of defense and this is where our cannot spell this is where our t cells and our b cells are going to come into play so it is these b cells that are going to churn out the cells that are going to kind of attack these foreign invaders however, at the same time this is occurring, we also have a specific subtype of b cells known as memory b cells, which are actually going to engulf this pathogen, and it is later going to expose this for an invader on its surface.
01:37
So essentially it is taking this antigen and kind of making a memory storage bank of this foreign invader and exposing it on its surface.
01:49
So next time around, when you're then exposed to the infection again, usually you do not get as sick from the infection and usually not as quickly either.
01:59
And this is due to the fact that the body has already been exposed to it and the body already has these memory b cells, which are presenting the antigens that are found on the...