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Yes, there is a way to test for presence of the spike protein in organ samples. This may not be possible in human biopsies / tissue samples with the standard vaccine, but it was done by Pfizer while testing BNT162, PF-07302048, as indicated in their own test data*. Done in rats (Wistar Han strain). Pfizer Report The highest concentrations were found in: ...


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It's unclear to me what tissue you expect to be sampled. SARS-CoV-2 is a respiratory virus and like similar viruses it's (differentially) diagnosed by "nasal" (more accurately: nasopharyngeal) swabs and PCR or at most by doing the same (PCR) on the more invasive (to obtain) BAL samples, which are more commonly used in pneumonia cases. (The latter ...


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