With the use of Atoxyl antibody obtained from the rabbit immunized with Atoxyl labeled egg-white albumin the author traced the changes of Atoxyl in the blood and oragns of the rabbit inoculated with Atoxyl labeled normal rabbit serum and homologus liver antiserum. As the results it has been clarified that the liver antiserum does not reveal absolute visceral specificity but it shows a relative visceralspecificity and also it tends to disturb the liver function.