Detection of virus replication in the tissues and organs of immunized SPF chickens. ZhaoKai ChenGang ShiXing-ming GaoTing-ting LiWei ZhaoYan ZhangFeng-qiang WuJin CuiXianlan WangYun-Feng 2013 *<p>Each group with same lower case superscript letters shows no significant difference (<i>p</i>>0.05). Amount of NDV detected in in the tissues and organs is expressed as EID<sub>50</sub>/0.1 ml.</p>