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A lack of intrinsic factor occurs when the immune system mistakenly attacks the cells in the stomach that produce this substance

doi: 10.1111/acel.12389 [DOI] [PMC free article] [PubMed] [Google Scholar] 14

We do not explicitly test whether other residues are tolerated in the spacer between the histidine residues

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Moreover, nonneutralizing binding antibodies to S2 have been linked to vaccine-mediated protection in a murine model using an alphavirus vectored pan-sarbecovirus [72]

When a scientist is conducting an experiment, the validity of their results depends entirely on the quality of their reagents