Horseshoe
-
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… Read more.
-
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… Read more.
