Thixotropic gel is an inert (nonreacting) synthetic substance in the bottom of certain tubes. When a specimen in a gel tube is centrifuged the gel undergoes a change in viscosity and moves to a position between the cells and the serum or plasma, forming a physical barrier between them. This separation prevents the cells from continuing to metabolize substances such as glucose in the serum or plasma.
Placement of Citations. 1  Place a citation as close to the quoted or paraphrased material as possible without disrupting the sentence. 2  When material from one source and the same page numbers is used throughout a paragraph, use one citation at the end of the paragraph rather than a citation at the end of each sentence.
Know the format. For MLA style, you'll embed a reference to your citation in the text, then include a works cited page at the end of your essay. 2. Cite the website in the text. Directly after the sentence in which you reference the information from the website, put in a reference to your works cited page.1  Do not put a period at the end of the sentence (yet). 2  Put your reference in parentheses.3  Start the parentheses one space away from your last word.now the format. For citations in APA style, you'll embed a reference to your citation in the text, then include a reference list at the end of your essay. 2. Cite the website in the text.