Select the incorrect matching.

Options

A. NACO`rarr` National AIDS Control Organisation
B. ELISA `rarr` Enzyme Linked Immunosorbent Assay
C. SCID `rarr` Stress Combined Immunodeficiency
D. PKU `rarr` Phenyl Ketonuria

Answer

To solve the question of selecting the incorrect matching, we will analyze each of the given options step by step.

### Step 1: Analyze the first match - NACO
- **Match:** NACO - National AIDS Control Organization
- **Explanation:** NACO is indeed the National AIDS Control Organization in India, which is responsible for formulating policies and implementing programs for the prevention and control of HIV/AIDS.
- **Conclusion:** This match is **correct**.

### Step 2: Analyze the second match - ELISA
- **Match:** ELISA - Enzyme Linked Immunosorbent Assay
- **Explanation:** ELISA is a widely used laboratory technique that detects and quantifies proteins, including antibodies and antigens. It is commonly used for diagnosing various diseases, including HIV/AIDS.
- **Conclusion:** This match is **correct**.

### Step 3: Analyze the third match - SCID
- **Match:** SCID - Stress Combined Immunodeficiency
- **Explanation:** SCID stands for Severe Combined Immunodeficiency, which is a genetic disorder characterized by the disturbed development of functional T cells and B cells caused by numerous genetic mutations. The term "Stress Combined Immunodeficiency" is incorrect.
- **Conclusion:** This match is **incorrect**.

### Step 4: Analyze the fourth match - PKU
- **Match:** PKU - Phenylketonuria
- **Explanation:** PKU is indeed Phenylketonuria, a genetic disorder in which the body cannot metabolize phenylalanine due to the absence of the enzyme phenylalanine hydroxylase. This leads to a buildup of phenylalanine, which can cause brain damage if not managed.
- **Conclusion:** This match is **correct**.

### Final Conclusion
After analyzing all the matches, the incorrect match is the third one: SCID is incorrectly matched with "Stress Combined Immunodeficiency" instead of "Severe Combined Immunodeficiency."