插图素材: bacterias, viruses, blood cells seamless pattern
gastritis (acute, chronic ) peptic ulcer enteritis(diarrheal
and enteritis in the mist university of washington在雾中肺炎和
2013 * 鸭 瘟 (duck plague) 鸭病毒性肠炎 (duck virus enteritis)
between mycotoxin contamination in feed and necrotic enteritis