Definitions for "positive test"
a reproduction of the clinical disease showing redness, infiltration and eventual vesicles
a strong diagnostic character, but a negative test does not mean that the plants do not have the disease
a true positive as long as there has been no contamination during the conduct of the test
an allergic response (an "urticarial weal") at the site of the injection, which might look like a swollen reddened area about the size of a quarter
Keywords:  colonoscopy, indication
an indication for colonoscopy
Keywords:  sure, diagnosis
a sure diagnosis
Keywords:  offense, dischargeable
a dischargeable offense