Histopathological examination of rejected corneal allografts in CD4 KO mice revealed a mixed inflammatory infiltrate containing large numbers of neutrophils and mononuclear cells, which was indistinguishable from the infiltrate seen in rejected corneal allografts in wild - type mice (data not shown). (journals.lww.com)
For histopathological analysis, left lung, liver, small intestine, colon, and tongue (used as a surrogate for skin) specimens of recipients were fixed with 10 % neutralized formalin, embedded in paraffin, sectioned, mounted on slides, and stained with H&E. (jimmunol.org)
If the lump is sent for histopathological diagnosis, the diagnosis can be confirmed, the completeness of excision assessed and other diagnoses ruled out. (brittonroadveterinaryclinic.com)