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%.
The gross lesions were higher in infected untreated control which include the lesions in kidney liver and the spleen of birds.
The frequency of gross lesions in the 5 groups is shown in Table 2.
Gross lesions were absent in the liver, kidney, and gastrointestinal tract (online Technical Appendix, http://wwwnc.
The gross lesions of the disease are the thickness and corrugation of the intestinal mucosa, enlargement of mesenteric lymph nodes and hepatic granulomas (Mahmoud et al.
Representative samples of organs showing gross lesions (stomach and genital organs) were collected in 10% NBF for histopathological examination.
The birds lacked papillary reflexes to light, and there were no gross lesions in the eyes.
The necropsy examination of killed and dead birds during the experiment was performed for gross lesions on different visceral organs.
Endoscopic examination of the nose and nasopharynx detected no gross lesions.
In addition to the documenting of gross lesions, in the instance when potential infarcts are identified and one is a central lesion, the central lesion should be preferentially sampled for histology over a peripheral lesion.
Parenchymal tissues were collected for histopathologic analysis from 8 Baikal teals, 2 bean geese, and 1 whooper swan showing gross lesions and 3 bean geese and 2 mallard ducks not showing gross lesions.
Five randomly selected birds from control group were also slaughtered at 5 and 10 days PI but no gross lesions were seen on postmortem examination.