Jerne’s hypothesis is for
**Core Concept**
Jerne's hypothesis is a concept in immunology that explains the network theory of the immune system. It proposes that the immune system consists of a network of interconnected lymphocytes that recognize and respond to specific antigens, and that the immune response is a result of the interactions between these lymphocytes.
**Why the Correct Answer is Right**
The network theory, proposed by Niels Kaj Jerne, suggests that the immune system is a dynamic and interconnected network of lymphocytes that recognize and respond to specific antigens. This theory is based on the idea that the immune system is not just a collection of individual cells, but rather a complex system that is capable of adapting and responding to changing environments. The network theory also suggests that the immune system is capable of recognizing and responding to self-antigens, which is known as tolerance.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because Jerne's hypothesis is a specific concept in immunology, and it does not relate to the general concept of immune tolerance.
**Option B:** This option is incorrect because the network theory of the immune system is a broader concept that encompasses many different aspects of immunology, and it is not limited to a single hypothesis or theory.
**Option C:** This option is incorrect because Jerne's hypothesis is a specific concept in immunology, and it does not relate to the concept of immune surveillance.
**Clinical Pearl / High-Yield Fact**
Jerne's hypothesis is an important concept in immunology because it helps to explain how the immune system is able to recognize and respond to specific antigens, and how it is able to maintain tolerance to self-antigens. This concept is also relevant to the development of vaccines and immunotherapies.
**Correct Answer: D. Jerne's hypothesis is related to the network theory of the immune system.**