Demyelinating disorders: Pathology review

A 19-year-old football player is brought to the emergency department by his roommate after he complained of lower extremity weakness. He initially had “tingling” of the toes, but he attributed it to an “intense practice” several days ago. The patient also reports he has not voided urine in the last 5 days. Four weeks ago, the patient had a febrile diarrheal illness that resolved after several days. Temperature is 37.0°C (98.6°F), pulse is 44/min, respirations are 14/min, and blood pressure is 128/74 mmHg. Physical examination reveals absent ankle and knee reflexes but intact sensation to light touch and pain. A lumbar puncture is performed. Which of the following cerebrospinal fluid findings is most likely to be seen in this patient?