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2. Laboratory rubber stopper - Wikipedia

   en.wikipedia.org/wiki/Laboratory_rubber_stopper

   A laboratory rubber stopper or a rubber bung or a rubber cork is mainly used in chemical laboratories in combination with flasks and test tube and also for fermentation in winery. [ 1 ][ 2 ][ 3 ] Generally, in a laboratory, the sizes of rubber stoppers can be varied up to approximately 16 sizes and each of it is specific to certain type of ...

3. Serum-separating tube - Wikipedia

   en.wikipedia.org/wiki/Serum-separating_tube

   These tubes should be used with care when measuring drug or hormone levels because the drug or hormone may diffuse from the serum into the gel, causing a reduction in measured level. The gel in SST II tubes (which appears slightly less opaque) is supposed [weasel words] to have less effect on drug levels in serum. [citation needed]

4. Vacutainer - Wikipedia

   en.wikipedia.org/wiki/Vacutainer

   Vacutainer. A vacutainer blood collection tube is a sterile glass or plastic test tube with a colored rubber stopper creating a vacuum seal inside of the tube, facilitating the drawing of a predetermined volume of liquid. Vacutainer tubes may contain additives designed to stabilize and preserve the specimen prior to analytical testing.

5. Hummingbird - Wikipedia

   en.wikipedia.org/wiki/Hummingbird

   Hummingbirds are the smallest mature birds, measuring 7.5–13 cm (3–5 in) in length. The smallest is the 5 cm (2.0 in) bee hummingbird, which weighs less than 2.0 g (0.07 oz), and the largest is the 23 cm (9 in) giant hummingbird, weighing 18–24 grams (0.63–0.85 oz).

6. Sword-billed hummingbird - Wikipedia

   en.wikipedia.org/wiki/Sword-billed_hummingbird

   Description. The sword-billed hummingbird is among the largest species of hummingbirds. Adults are 13–14 centimetres (5.1–5.5 in) long excluding the bill and weigh 10–15 g (0.35–0.53 oz), with males being slightly larger on average than females. [ 11] The most distinctive feature of the species is the enormous bill, which is 8–12 ...

7. Ruby-throated hummingbird - Wikipedia

   en.wikipedia.org/wiki/Ruby-throated_hummingbird

   Trochilus colubris Linnaeus, 1758. The ruby-throated hummingbird ( Archilochus colubris) is a species of hummingbird that generally spends the winter in Central America, Mexico, and Florida, and migrates to Canada and other parts of Eastern North America for the summer to breed. It is the most common hummingbird in eastern North America, having ...