醫療類國考
107年
[護理師] 基礎醫學
第 68 題
有關人類主要組織相容性複合體（MHC）分子的敘述，下列何者正確？
- A 第一型主要組織相容性複合體分子可被 B 淋巴細胞所辨識
- B 每個人的主要組織相容性複合體分子與雙親中的一人完全相同
- C B 淋巴細胞能與主要組織相容性複合體分子結合，進而產生細胞激素（cytokine）
- D 主要組織相容性複合體分子呈現抗原，與 T 淋巴細胞活化有關
思路引導 VIP
想像免疫系統是一支軍隊，如果敵軍（病原體）躲在細胞內部，偵察兵（免疫細胞）無法直接進入細胞搜尋，那麼細胞必須透過什麼樣的「展示機制」，才能讓外界的偵察兵知道內部發生了感染並請求支援呢？
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AI 詳解
AI 專屬家教
Well, it appears you didn't completely botch it.
- Barely acceptable: Fine, you got this right. It means you've at least absorbed the absolute basics of how the adaptive immune system decides who's friend and who's foe. Distinguishing between different types of lymphocytes? Revolutionary, I know.
- Fundamental truth: MHC 分子（主要組織相容性複合體）– you know, the "Major Histocompatibility Complex"? Their sole purpose is 抗原呈現 (antigen presentation). They're glorified "display racks" for antigens, whether they're from inside or outside the cell. And who do they present them to? The T 淋巴細胞 (T lymphocytes)' receptors (TCRs). Without this precise interaction, your T cells might as well be on vacation.
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