| M/A | male, altered [animal]; mood and/or affect |
|---|---|
| MALT | male, altered [animal]; mucosa-associated lymphoid tissue; Munich Alcoholism Test |
| M/C | male, castrated [animal] |
| NADA | New Animal Drug Application |
| NCI | National Cancer Institute; noncriterion ischemic [animal]; nuclear contour index; nursing care integ... |