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A growth medium or culture medium is a solid, liquid or semi-solid designed to support the growth of microorganisms or cells, or small plants like the moss Physcomitrella patens. Different types of media are used for growing different types of cells.
The two major types of growth media are those used for cell culture, which use specific cell types derived from plants or animals, and microbiological culture, which are used for growing microorganisms, such as bacteria or fungi. The most common growth media for microorganisms are nutrient broths and agar plates; specialized media are sometimes required for microorganism and cell culture growth. Some organisms, termed fastidious organisms, require specialized environments due to complex nutritional requirements. Viruses, for example, are obligate intracellular parasites and require a growth medium containing living cells.

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  1. L

    Weaver Tactical 3-15x50 Illuminated Mil/Mil FFP Scope, Badger Ordinance Medium 30mm rings

    Weaver Tactical 3-15x50 Illuminated Mil/Mil FFP Scope with Badger Ordinance Medium 30mm steel rings. Mil/Mil scope. Rifle pictured is not included but available for sale in different thread. Scope also comes with original box, cleaning cloth and manual. Gun not included. Great scope. Glass is...
  2. A

    WTT OR  Seekins Precision 30mm low rings for medium high

    Want to trade new in box Seekins Precision 30mm low rings (0.82") for SP medium high rings (0.92").
  3. iamapuffin

    WTS WA  Badger Ordnance 30mm Medium Rings

    Pics here: Imgur Like new. I just got them with a scope and don’t need them. Found here: Badger Ordnance Scope Ring, 30mm Up to 20% Off w/ Free Shipping — 10 models These are in great condition. $100 + shipping in the US via PayPal
  4. thewhitebuffalo83

    Cold Steel Voyager Medium

    Traded for this a while back in trade and never did anything with it. Asking $30 Located in Troutdale.
  5. jordanvraptor

    WTS OR  Del-Ton 16” Medium contour barrel assembly.

    This is a nice upper but I wanted a lightweight barrel. I was sent this instead. Anyways, its a new, never fired, 16 inch 1x8 in .223 Wylde. Chrome moly vanadium with T marks and M4 feed ramp cuts. Includes charging handle, bolt carrier group, and a Magpul MBUS rear sight. $260 cash and I can...
  6. Delasangre4231

    Medium profile barrels

    Hey guys I'm looking to build an AR-15 upper. It's primary purpose is to be suppressed most of the time. What I am looking for is a medium profile 16" barrel. I see lots of Government or M4 profile where it's pencil profile under the handguard and normal thickness to the muzzle. And then I see...
  7. PNWhunter541

    WTS OR  P320 Full size Medium grip module

    Lightly used full size P320 Medium grip module. $20 shipped
  8. Qlaskowski

    WTS OR  Full size P320 Medium grip module

    Lightly used Full size P320 Medium grip module. $20 shipped
  9. Qlaskowski

    WTS/WTT OR  Full size P320 9/40 grip module Medium black

    $25 (Bend, OR) Like new full size black P320 medium grip module for 9/40. Less than 200 rounds on frame before swapping out. Pics available on request if interested. No damage/marks etc.
  10. PerPDX

    WTS OR  Smith & Wesson M&P Original Sizing Straps $15

    Original For S&W M&P series pistol Two straps - Large and Medium Like new / most likely never used I think it fits all M&Ps according to what I researched. Most likely not for Shield. Find out before buying $15 I can take some 223 / 9mm as swap Deal at my office.