Jorge, M.F. et al. 2021. Quantification of the collagen fibers of healthy and neoplastic mammary tissue in cats by the Picrossirius Red histochemical method. Brazilian Journal of Veterinary Pathology. 14, 1 (Mar. 2021), 18–23. DOI:https://doi.org/10.24070/bjvp.1983-0246.v14i1p18-23.