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On Thursday, April 9, 2020 at 11:32:25 AM UTC-4, Bill Sloman wrote:
All that may be fine and dandy, but you obviously didn't have to know squat about immunobiology to do whatever engineering you were doing. So your claim to having any kind of credentials is vacuous.
Wow- you're so out to lunch you won't be back until Christmas! That's the PCR looking for gene sequence (s) in the antigen. Nobody calls that an antibody test, they're called RT-PCR surprisingly enough. And they have developed rapid PCR, see my post about Abbott Labs recent introduction, the 5-minute test, that's going to make them richer than rich.
Monoclonal antibodies just don't drop out of the sky, especially in your day> They were designed from antibodies isolated from people and or animals who survived the disease. Even in this day and with their incredible simulation capability, the monoclonal antibody manufacturers are using survivor anitbodies. I know you're so damned dumb you think they're using the survivor's actual antibody, but it really means they're using the antibody the survivor's immune designed designed, and then going to transgenic mic or some other means to actually mass produce the antibody.
On Friday, April 10, 2020 at 12:57:05 AM UTC+10, bloggs.fre...@gmail.com wrote:
On Thursday, April 9, 2020 at 1:10:05 AM UTC-4, Bill Sloman wrote:
On Thursday, April 9, 2020 at 7:52:53 AM UTC+10, bloggs.fre...@gmail.com wrote:
On Wednesday, April 8, 2020 at 12:04:00 AM UTC-4, Bill Sloman wrote:
On Wednesday, April 8, 2020 at 1:54:02 AM UTC+10, bloggs.fre...@gmail.com wrote:
On Tuesday, April 7, 2020 at 1:00:41 AM UTC-4, Bill Sloman wrote:
snip
My point was the rapid antibody test will be unusable towards a large scale retrospective study of the spread of the epidemic, but apparently that was lost on you.
Still is. The conclusion seemed to be based on the idea that antibodies go away with time, when the real problem is that RNA viruses mutate fast enough the antibody to the ancestral virus doesn't react to it's remote descendant,
There have been no such mutations noted, and the various mutations and/or strains that have been identified, using a much larger population than just a single individual, all have the same immutable S-(spike) protein used for cell fusion/infection. All the rapid antibody tests are looking for the IgX's targeting that S-protein.
All the rapid antibody tests may be looking for the spike protein, but natural antibodies aren't that specific, otherwise the 25% of colds caused by corona viruses would be blocked by our own antibodies, and SARs, MERS and Covid-19 wouldn't have infected us.
Some weeks ago a I posted a link to some work on a synthetic vaccine which was supposed to create lots of synthetic spike protein in the blood of the people being vaccinated, so that they'd antibodies that reacted just to the spike protein on the surface of any of the corona viruses - SARS, MERs, Civd-19 and the one that cause 25% of common colds - natural antibodies seem to go for larger targets, and the viruses do mutate enough to change the spacing between the spike proteins, so that natural antibodies don't pick up on different corona viruses.
You still seem confused about the two distinct types of antibody tests: 1) the one type looking for antibodies in the blood that react to a specific antigen, and 2) the type looking for antigens in the blood that react to a specific antibody.
I can't imagine why you think that. I worked on a machine that used monoclonal antibodies to latch onto specific infective agents - the one that got sold to Porton Down got sold with a bunch of disposable sensing blocks that had been loaded with an antibody that latched onto Yersinia pestis (the Black Plague bacterium).
All that may be fine and dandy, but you obviously didn't have to know squat about immunobiology to do whatever engineering you were doing. So your claim to having any kind of credentials is vacuous.
The natural antibodies in the blood latch onto specific bacteria and viruses, and there are well know tests to checked whether you've been infected - that's how the Dutch doctors worked out that my wife's weird symptoms were caused by secondary European Lyme disease (borrelia). My Dutch GP checked me out years later, and I had antibodies to borrelia too, but my immune system seemed to have got rid of the bugs at the primary stage of the infection.
Nothing by way of the second test are even in the process of being introduced, mainly because they're a lot more trouble with raising transgenic animal stock, infecting them and extracting and tagging antibodies. Even you should be able to understand how much more work that is.
Your "second test" looking for antigens in the blood (or saliva or nasal mucus) is an example of what is used to check for the Covid-19 virus.
Wow- you're so out to lunch you won't be back until Christmas! That's the PCR looking for gene sequence (s) in the antigen. Nobody calls that an antibody test, they're called RT-PCR surprisingly enough. And they have developed rapid PCR, see my post about Abbott Labs recent introduction, the 5-minute test, that's going to make them richer than rich.
Monoclonal antibodies are great at locking onto specific antigens - as used in the machine I worked on.
The confusion is clearly all yours.
Monoclonal antibodies just don't drop out of the sky, especially in your day> They were designed from antibodies isolated from people and or animals who survived the disease. Even in this day and with their incredible simulation capability, the monoclonal antibody manufacturers are using survivor anitbodies. I know you're so damned dumb you think they're using the survivor's actual antibody, but it really means they're using the antibody the survivor's immune designed designed, and then going to transgenic mic or some other means to actually mass produce the antibody.
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Bill Sloman, Sydney