Most researchers and medical professionals believe that MS is an immune-mediated disease. This means that the bodyâs immune system attacks healthy nerve tissue, which results in nerve damage that affects the whole body. Immune system activity seems to result in the inflammation responsible for many MS symptoms.
arm's-length transaction. Basis of determining fair market value (FMV) , it is a dealing between independent, unrelated, and well informed parties looking out for their individual interests. Transactions involving family members, and parent companies and subsidiaries, are deemed arm-in-arm dealings. To qualify as an arm's length transaction, neither of the involved parties may have any interest in the transaction's consequences to the other party.
keep somebody/something at arm's length. also hold somebody/something at arm's length. to avoid becoming connected with someone or something We proposed a tax break for companies that treat their workers well, but lawmakers are keeping the idea at arm's length for now.