SLC16A1 and prostate carcinoma: The putative presence of monocarboxylate transporters SLC16A1 (MCT1) (McClelland et al., 2003) and SLC16A7 (MCT2) (McClelland et al., 2003; Valenca et al., 2015) is only based on immunoblotting of purified rat liver peroxisomes (McClelland et al., 2003) or immunocolocalisation in prostate cancer cells (Valenca et al., 2015).