gross lesion


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gross le·sion

a lesion plainly visible to the naked eye.

gross lesion

A lesion visible to the eye without the aid of a microscope.
See also: lesion
References in periodicals archive ?
The protective efficacy of this vaccine, in terms of mortality, clinical signs and gross lesions, against lethal challenge of virulent IBH-HPS virus was also 100%.
Other patterns of gross lesions observed in this study were either focally extensive or multifocal and showed histological alterations similarly to the diffuse atrophy of the left lobe; it is likely that these lesions represent an early stage of atrophy.
Gross lesions: No apparent gross lesions were noticed in any visceral organ of group A (control) birds till the end of study.
The chicks were necropsied to observe gross lesions and samples of liver, spleen, caecal tonsils, mid-gut and caecal contents, were collected for bacteriology.
A total of 10,389 male and female goats of 2 breeds (West African Dwarf and Red Sokoto) and 1-2 years of age were slaughtered; 1,387 were inspected for gross lesions of TB.
In addition to a few nonspecific gross lesions, nontuberculous lesions were observed in the liver, spleen, and intestinal organs.
Necropsy examination found gross lesions in the lung, including multifocal to coalescing reddish consolidations, consistent with influenza-induced lung lesions in other species.
(6) Gross lesions of photosensitization dermatitis consist of erythema and edema and can progress to cutaneous necrosis, vesicle formation, ulceration, exudation, and sloughing of necrotic tissues.
Gross lesions included scattered petechia in epicardial fat within the coronary groove (Figure, panel A), a few petechia in mucosa of the ventriculi (gizzards), slight increase in pericardial fluid, and swollen kidneys.
Eight days after challenge, birds were killed and weighed, and their intestines examined for gross lesions. Effectiveness of the immunization was measured by analyzing weight gain, intestinal lesions, severity of diarrhea, feed conversion ratio, and oocyst production.
Immunohistochemical analysis with a CCoV-specific monoclonal antibody detected CCoV antigen in the organs with gross lesions that were examined (lungs, kidneys, liver, spleen, gut, and lymph nodes) (Figure 1).