Biology News
Potassium is critical to circadian rhythms in human red blood cells - Science Daily


Science Daily
Red blood cells, similar to other cells in the body, have 24hour biological clocks (circadian rhythms) that alter their activity between day and night. Unlike other cells, red blood cells do not have DNA and the 'clock genes' that control rhythms are ...
Express.co.uk
News-Medical.net

Students create island-themed ornaments for tree in nation's cap ... - Hawaii News Now


Hawaii News Now
Ornaments created by Hawaii students are on display in Washington, D.C..

Crowding in the skin: Stem cells sense neighborhood density to make decisions - Phys.Org


Phys.Org
Skin cells growing in a petri dish (green: cytoskeleton, red: cell-cell junction protein). Credit: MPI f. Biology of Ageing. Human skin is a remarkable organ serving as a barrier protecting us from pathogens, toxic substances and others. Our skin needs ...

Tree and Wood Identification: Red Oak

Blacksburg - United States

Pictures and facts about red oak leaves and wood.

  • Category:

    Botany - Plants

  • Image:

  • Description:

    WMS Kids' Section: Tree and Wood Identification - Red Oak

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Presents microscopic images of Quercus rubra, the Northern Red Oak.

Tree-Identification.com
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Provides information about the general identification of trees as well as more specific techniques for a limited number of species. Includes information about dendrology.

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A resource for beginners and others. Includes a collection of descriptive graphics showing leaves, and buds, with notes.

Tree Identification Expert
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Offers software which identifies northern forest trees. Includes details of the trees covered and an FAQ.

Tree Anatomy and Identification - About.com
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Article and collection of online resources for identifying trees. Includes an online interview to identify the leaves of fifty common native North American trees.

Quercus falcata var. falcata and var. pagodifolia (Southern Red Oak and Cherrybark Oak)
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For each variety, discusses habitat, native range, associated forest cover, and detailed facts on reproduction and growth. Includes distribution maps.

The Red Mangrove-tree Crab
United States

Photographic study of this crustacean by Hugh Mitchell-Tapping with close-ups of various appendages and information and photographs of developing larvae.

The Red-eyed Tree Frog
United States

Research project by Lindsey Bergin providing information on Agalychnis callidryas, its classification, habitat, adaptation, nutrition, reproduction and interaction with other species.

Quercus rubra (Red Oak)
Canada

Photos of fruit, leaf, bud, flower, bark, and form.

Red Oak - Quercus rubra
United States

From a site dedicated to common trees of Camp Conestoga.