Cell cultures established from tissues of nine patients with amyotrophic lateral sclerosis (ALS) and maintained for several months to over a year yielded no clue as to a possible viral cause of the disease. Serum antibody titers to 15 viral agents in 34 patients with ALS did not differ from those of matched controls.
Cremer NE, Oshiro LS, Norris FH, Lennette EH. Cultures of Tissues From Patients With Amyotrophic Lateral Sclerosis. Arch Neurol. 1973;29(5):331–333. doi:10.1001/archneur.1973.00490290071009
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