Let's Talk Micro

This week's episode features Let's Talk Micro's second interview. Dania Casellas is a microbiologist that performs testing on donor organs.

In this episode I continue going over tests and biochemicals for gram negative cocci. In addition I briefly go over different species of gram negative cocci and introduce new agar: Martin Lewis and Modified Thayer Martin.

In this episode I start going over tests and biochemicals for gram negative cocci. First up, the catarrhalis disk, used for the identification of Moraxella catarrhalis.

What is the urease test? What is the principle of it? Is it only used for gram negative rods? In this episode I go over the urea test, including its principle, reactions, and its differences and similarities to the TSI and LIA tests.

What is the lysine iron agar test? What is it used for? In this episode I go over this test including reactions and comparing and contrasting it with the TSI test.

What is TSI? Which organisms is it used for? In this episode I go over the Triple Sugar Iron test, including its components, how does it work and examples of organisms and their reactions.

In this episode I go over media that Karla Zamora mentioned in her interview such as Hektoen, XLD and Palcam. I discuss components of the agar, colonial morphology and more.

Let's Talk Micro's first interview features a conversation with Karla Zamora, an environmental microbiologist from Mexico. In this episode she talks about her work including techniques and organisms she works with.

In this episode I continue going over biochemicals for gram negative rods: oxidase. I also briefly discuss some species of gram negative rods and their oxidase results.

In this episode of Let's Talk Micro, we kick off biochemicals for Gram-negative rods with the indole test. After wrapping up the Gram-positive cocci last week, we now explore what indole is, how the test works, and how it helps differentiate organisms like E. coli, Proteus, and Klebsiella. A classic biochemical that still matters in today's microbiology lab.

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