DALLAS - A divided Texas Supreme Court on July 11 rejected the "any exposure" standard in mesothelioma, saying such cases also require evidence that exposure to defendant's product was a substantial factor in his disease. However, the court said plaintiffs alleging multiple exposures to asbestos need not show "but for" causation (Susan Elaine Bostic, et al. v. Georgia-Pacific Corp., No. 10-0775, Texas Sup.).