Antonyms for Modified Immune Globulin Anti Echovirus Antibody could include unaltered, natural, unmodified, non-artificial, regular, or typical immune globulin. The antibody, which is used to prevent and treat infections caused by the Echovirus, is specifically designed to neutralize the virus and improve immune response. However, if a person's immune system is capable of fighting the Echovirus on its own, these antonyms could apply as the Modified Immune Globulin would not be necessary. In certain cases, a patient may not respond well to the modified version, prompting medical professionals to utilize the natural or unaltered immune globulin instead.