丁型冠状病毒（Deltacoronavirus）在2011年划分为第四种冠状病毒属。猪丁型冠状病毒(PDCoV)是猪肠道疾病病原，能感染各年龄段的猪群，引......

Large amount of disease-specific protein(SP) accumulated in therice plant cells infected by rice grassy stunt virus(RGSV......