|
AMATEUR NATURALIST From Troy to Knossos, great cities are built by industrious and social animals
|
Under two sumac trees by my house in Troy, a great metropolis has
been under construction all summer. It has gotten bigger and bigger,
one doorway after another appearing out of the dirt, and now spans
more than 2 feet.
The city's residents scramble around hauling loads of dirt and
scrutinizing every inch of land to find out what use can be made of
it. There's no technology. It's as busy and strange a place as the
ancient Greek city of Knossos must have been.
Thousands of black field ants live in these cities in my yard. In
the surrounding grass and under strawberry leaves, in patches of ...
|
Melanin offers protection against induction of cyclobutane pyrimidine dimers and 6-4 photoproducts by UVB in cultured human melanocytes
Magazine article from: Photochemistry and Photobiology
; Melanin Offers Protection Against Induction of...this investigation was to correlate the melanin content in human pigmentary cells with...to examine the relationship between the melanin content and the removal of the photoproducts...
|
|
|
Methodology for Evaluation of Melanin Content and Production of Pigment Cells in Vitro[dagger]
Magazine article from: Photochemistry and Photobiology
; ABSTRACT Melanin has a photo-screening, a biophysical/biochemical and a cosmetic effect. Melanin content of cultured pigmented cells can be...spectrophotometry and expressed either as melanin content per cell or melanin content per culture...
|
|
Herbal melanin modulates tumor necrosis factor alpha (TNF-[alpha]), interleukin 6 (IL-6) and vascular endothelial growth factor (VEGF) production.
Magazine article from: Phytomedicine: International Journal of Phytotherapy & Phytopharmacology
; ...Hassib, 1998). Melanin is a pigment that causes...little understanding of melanin morphology, structure...Tian et al., 2003). Melanins are divided into three...Most of the plant melanins have not yet been given...recent findings that melanin, from a number of botanical...
|
|
|
Structural studies bleached melanin by synchrotron small-angle X-ray scattering
Magazine article from: Photochemistry and Photobiology
; ...that this structure is the actual melanin "protomolecule" or fundamental...determine the sizes of unbleached melanins derived from precursors of various...of aggregation of the unbleached melanin or to determine the size and shape...
|
|
|
Antioxidant Properties of Melanin in Retinal Pigment Epithelial Cells
Magazine article from: Photochemistry and Photobiology
; ...eumelanin and a possible antioxidant role of melanin is reported here. The photooxidation of...and absence of either calf or human RPE melanin in A2E-laden RPE cells. It was found that calf melanin was protective against the photooxidation...
|
|
|
Femtosecond two-photon excited fluorescence of melanin
Magazine article from: Photochemistry and Photobiology
; ...final products of melanin biosynthesis, which...property of the melanins is their absorption...photoprotective action of melanin against skin cancer...ability of excited melanins to generate free...the other hand, melanins may act as free...sunlight absorption, melanin has been ...
|
|
A shift in thinking: Melanin makes skin vulnerable
Magazine article from: Dermatology Times
; ...recently eported, in a study of mice, that melanin is a photosensitizer, as well as a photo protector. And the melanin in blondes and redheads might magnify...Academy of Sciences that UV-irradiated melanin photosensitizes adjacent cells to apoptosis...
|
|
Unraveling the Mystery of Melanin.(scientists searching to determine what role melanin actually plays in the skin)
Magazine article from: Science News
; ...a decade ago, test-tube studies on melanin, the modified protein that darkens skin...the dark protein. They indicated that melanin can itself play a role in certain chemical...Chemists are now trying to determine what melanin actually does in the skin. Although most...
|
|
Inhibit melanin: your fungal problems are over. (fighting crop-damaging fungi)
Magazine article from: Agricultural Research
; Inhibit Melanin: Your Fungal Problems Are Over The secret...s punch is a natural compound called melanin - the same compound that gives fungi their...penetrate plant tissue. In certain fungi, melanin must first accumulate in the cell wall...
|
|
|
Binding of Metal Ions to Melanin and Their Effects on the Aerobic Reactivity¶
Magazine article from: Photochemistry and Photobiology
; ...body (1). Natural melanins contain various metal...of the functions of melanin is to trap excess metal...acid (EDTA)-washed melanin was prepared as described...Fe(III)-enriched melanins were prepared as follows. EDTA-washed Sepia melanin particles were stirred...
|
Find more facts and information related to the
article "AMATEUR NATURALIST From Troy to Knossos, great ..."
