कौन-से प्रकार की अतिसंवेदनशीलता अभिक्रिया (hypersensitivity reaction) मुख्य रूप से IgE एंटीबॉडी द्वारा मध्यस्थ होती है जिसके कारण हिस्टामाइन रिलीज होता है?

Which of the following statements are CORRECT regarding adaptive immunity? Statement A: Adaptive immunity has the ability to specifically recognize and eliminate foreign antigens. Statement B: Immunological memory is a hallmark feature of adaptive immunity.

Which pair of organs represents the primary lymphoid organs responsible for lymphocyte maturation and differentiation in humans?