A 16 year old girl is admitted to the hospital with a 1 day history of severe headache and a fever of 38.7 C (103F). Physical examination reveals nurchal rigidity. Blood cultues for Neisseria meningititdes are postive. Which of the following familes of proteins mediates bacterial opsonization in the cerbral spinal fluid of this patient with bacterial meningitits?

Immunoglobulins

Defensins

Kinins

Slectins

Kallikreins