Faecal shedding of virus by cats included in infection experiments A2 and B2 after inoculation with FECV UCD (A) or FECV RM (B), as monitored by TaqMan^® RT-PCR. Means per group (n = 2). Note that RNA quantities below 3 × 10³ cannot be considered accurate (real quantities are probably lower) due to the non-linear relationship between input RNA and Ct value in the assay in the lower concentration range.