... after injection. Moreover, the exclusion of the protein in urine and faeces, and uptake by the liver, was relatively low. On the otherhand, the least stable human CD69NS84 protein dis-played a rapid ... biochemical stability. Interest-ingly, the stability of the short proteins CD69NV82 and CD69NS84 is much lower using these criteria,both from the point of view of their physical stability upon ... further reduction of this protein in this area, and particularly the removal of the amino acids forming the third stalk disulfide bridge, is detrimental to the stability of such soluble CD69 proteins...