SCID is defined by a lack of functional B and T cells which eliminates protection by humoral and cell-mediated immunity. Which of the following is true?
A. A genetic defect disrupts the development of the lymphocytic cell lines.
B. A genetic mutation renders the individual incapable of removing a toxic DNA metabolite from lymphocytes, which ultimately destroys them
C. Genes coding for B and T cell receptors are mutated so the cells are incapable of binding antigens.
D. All of the above describe cases of SCID.
Select your answer:
Topics:
Pathophysiology_Endocrine Living Organisms & Animal Behaviors Biopsychology - Neuroplasticity and Functional Recovery Vision (AP Psych) Eczema Tissue Repair Pathology My Teeth Blood/Lymphatic/Immune Biochemistry DNA and RNA Structures Cellular Transport and Metabolism Life Processes - Digestion and Respiration Somatotypes Blood and Bones Major OrgansOther quiz:
Eye Histology › ViewTrue/False: The choroid is vascular.
A. TRUE
B. FALSE
Anatomy & Physiology: Respiratory › View
To increase CO2 levels in the blood, a person should
A. Breathe faster than normal
B. All of the choices are correct
C. Take deeper and longer breaths
D. Hold their breath