Secondary lymphoid tissues are arranged as a series of filters monitoring the contents of the extracellular fluids, i.e. lymph, tissue fluid and blood. The lymphoid tissue filtering each of these fluids is arranged in different ways. Secondary lymphoid tissues are also where lymphocytes are activated. These include: lymph nodes, tonsils, spleen, Peyer's patches and mucosa associated lymphoid tissue (MALT).
What is a text editor? A text editor is a computer program that allows you to create and edit files that contain plain text. This is very different than a robust word processing program like Microsoft Word, Apple Pages, or Google Docs, because they add special formatting thatâs hidden to the user.
Download a good text editor. Many programming languages allow you to use external text editors when you write your code. Find a text editor that will allow you to see indentations and code markup. Popular programs include Notepad++ (Windows), TextWrangler (OS X), or JEdit (any system).