. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture -- Massachusetts. Figure 3. Bird No. !—Noninfected Hen; Bird No. II—Infected Hen. Pullorum diseased birds as a rule cannot be differentiated from the noninfected by physical examination. Apparently normal, well-developed birds may be affected with the disease. In- fection in such birds can be detected either by the agglutination test or by bacteriological examin- ation. Refer to questions 4 and 33. /&• ' ^. Please note that these images are extracted from scanned page images that may have been digitally enhanced for re
. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture -- Massachusetts. Figure 3. Bird No. !—Noninfected Hen; Bird No. II—Infected Hen. Pullorum diseased birds as a rule cannot be differentiated from the noninfected by physical examination. Apparently normal, well-developed birds may be affected with the disease. In- fection in such birds can be detected either by the agglutination test or by bacteriological examin- ation. Refer to questions 4 and 33. /&• ' ^. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Massachusetts Agricultural Experiment Station. Amherst, : Massachusetts Agricultural Experiment Station, 1907-1974
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