Agenus (Lexington, Mass.) has purchased 120 acres in the California Biomanufacturing Center located in Vacaville near Sacramento. Agenus specializes in immuno-oncology products, which span checkpoint antibodies, cell therapies, vaccines and adjuvants. Agenus purchased the parcels from A.G. Spanos, a housing developer. Vacaville is aiming to spur the growth of its biotech industry. Currently, the largest…