(July 11, 2023, 1:21 PM EDT) -- SAN FRANCISCO — Monsanto Co. on July 10 moved in California federal court to exclude specific causation opinions of a plaintiffs’ expert in two cases in the multidistrict litigation for product liability related to the herbicide Roundup, saying that because the expert “failed to complete the two required steps of his claimed ‘differential etiology’ methodology,” his testimony is unreliable....