Pathology Regarding severe combined immunodeficiency disease (SCID), which of the following statements is true? A Adenosine deaminase deficiency B Myeloperoxidase deficiency C NADPH oxidase deficiency D C1 esterase deficiency 💡 Explanation Regarding severe combined immunodeficiency disease (SCID), which of the following statements is true? ✓ Correct Answer: A. Adenosine deaminase deficiency