Category: Horseshoe
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Tracheal cytotoxin (TCT) is a soluble piece of peptidoglycan (PGN) found in the cell wall of all gram-negative bacteria, but only some bacteria species release TCT including Bordetella pertussis, Vibrio fischeri, and Neisseria gonorrhoeae
Tracheal cytotoxin (TCT) is a 921 dalton glycopeptide released by Bordetella pertussis, Vibrio fischeri (as a symbiosis chemical), and Neisseria gonorrhoeae (among other peptidoglycan-derived cytotoxins it produces). It is a soluble piece of peptidoglycan (PGN) found in the cell wall of all gram-negative bacteria, but only some bacteria species release TCT due to inability to recycle this piece of anhydromuropeptide. History In 1980, it was discovered that B. pertussis could attach to hamster tracheal epithelial (HTE) cells, and also, that…
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Clach an Tiompain (the “Sounding Stone” or the Eagle Stone)
Clach an Tiompain (in English, the “Sounding Stone”) or The Eagle Stone is a small Class I Pictish stone located on a hill on the northern outskirts of Strathpeffer in Easter Ross, Scotland. Description The stone is made of blue gneiss and is 32 inches (81 cm) high, 24 inches (61 cm) wide, and 10 inches (25 cm) thick. Carved on the southeast side are two images, a horse shoe-like arc symbol above…
