CD79A and irritable bowel syndrome: Variation in compositional and abundance data between the groups will be determined using the ANCOMBC package in R.43This data will also be compared against the HFC-IgG-seq/HFC-IgA-seq (see below) results to determine potential faecal microbial functional capabilities that are altered between groups due to a raised immune response, particularly in the PASC-IBS group.