TABLE 1.

Summary of infectivity study samples^a

Sample code	Lung lesion scoreb	Maximum diam (mm) of lymph node lesionc				Tissues confirmed M. bovis positive by culture
		AM	LB	PM	RB
A	5	—	15	15	—	Lungs; AM, LB, and PM lymph nodes
B	0	12	5	8	8	AM, LB, PM, and RB lymph nodes
C	3	—	8	—	—	Lungs; AM and LB lymph nodes
D	5	15	40	30	—	Lungs; AM, LB, PM, and RB lymph nodes
E	5	5	—	—	—	Lungs; AM, LB, PM, and RB lymph nodes

^aAll animals were confirmed to be without infection prior to challenge by SICCT, and lesions were measured at 17 weeks p.i. Abbreviations for lymph node locations: AM, anterior mediastinal; LB, left bronchial; PM, posterior mediastinal; and RB, right bronchial.

^bLung lesion scores: 0, no lesions; 1, 1 to 9 lesions; 2, 10 to 29 lesions; 2, 30 to 99 lesions; 4, 100 to 199 lesions; and 5, ≥200 lesions.

^c—, no lymph node lesion.