Describe the cellular organization of the thymus gland

Conduct a search of online immunology websites that relate to the topic. Choose a website that has not already been reported on, and write a research report of one or two paragraphs (150-400 words) describing the site or area relevant to the chapters from this module that you found interesting.
At the end include a provocative, open-ended question.
the cited resource must be open access and require no subscription or payment fees.