We are independent & ad-supported. We may earn a commission for purchases made through our links.
Advertiser Disclosure
Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.
How We Make Money
We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently of our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What Are Tumor-Infiltrating Lymphocytes?

By C.B. Fox
Updated Mar 03, 2024
Our promise to you
The Health Board is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At The Health Board, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject-matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

Tumor-infiltrating lymphocytes are cells that actively attack and destroy the cells that make up a tumor. There are a number of different antibodies that fall into this class of cells, and in order to destroy most tumors, several of them must be present. These lymphocytes are the body's natural defense against cancer and can often completely destroy tumors without the assistance of additional cancer therapies. In patients who must undergo therapy, including radiation or chemotherapy, tumor-infiltrating lymphocytes are still an important factor in recovery.

Several types of tumor-infiltrating lymphocytes exist, and many of them are in a class of white blood cells known a T or killer T cells. T lymphocytes are essential to the destruction of a tumor because they identify a growth as unwanted, begin to destroy it with certain enzymes and trigger other cell's assistance in the destruction of the rest of the tumor. Natural killer cells are also used in the destruction of tumors.

One of the main properties of tumor-infiltrating lymphocytes is that they are cytotoxic. This gives them the ability to kill cells that they come into contact with. Cytotoxic cells are used by the immune system for a variety of different purposes, including the destruction of cells infected with bacteria or viruses and the destruction of cells that have been damaged or that are faulty. Cancerous cells have a fault in that they do not undergo cell division and death at the normal rate. Rather, they divide indefinitely and do not die when conditions become too crowded or when faults appear in their deoxyribonucleic acid (DNA).

By targeting faulty cells, tumor-infiltrating lymphocytes are able to kill off the cells in a cancerous growth. In most cases, these growths are completely destroyed before a patient shows any signs of having cancer. Many growths do, however, expand too quickly for tumor-infiltrating lymphocytes to destroy, and the tumor will need to be treated medically.

Studies have shown that greater concentrations of tumor-infiltrating lymphocytes correspond to an improved chance of survival in cancer patients. Cancer treatments are often not entirely effective and work better when supplemented by an active and healthy immune system. The presence of many tumor-infiltrating lymphocytes around a tumor means that the patient's body is actively attacking the growth and attempting to destroy it. Patients with high concentrations of these cells have a greater chance of going into remission and having no recurrence of the cancer.

The Health Board is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Discussion Comments
The Health Board, in your inbox

Our latest articles, guides, and more, delivered daily.

The Health Board, in your inbox

Our latest articles, guides, and more, delivered daily.