snare drum definition. A shallow cylindrical drum, with wires or pieces of catgut (snares) stretched across the bottom skin to give a sharp, rattling sound when the top skin is struck. Snare drums are used in orchestras and in nearly all kinds of bands. Discover our greatest slideshows.
Although some mucins are membrane-bound due to the presence of a hydrophobic membrane-spanning domain that favors retention in the plasma membrane, most mucins are secreted onto mucosal surfaces or secreted to become a component of saliva.ature mucins are composed of two distinct regions: 1  The amino-and carboxy-terminal regions are very lightly glycosylated, but rich in cysteines. 2  A large central region formed of multiple tandem repeats of 10 to 80 residue sequences in which up to half of the amino acids are serine or threonine.
There's a slew of bacteria floating around in your mouth, but it's generally harmless. Since people have different eating habits in different places, you might think an American's saliva might look a lot different from, say, a South African's. Saliva contains more DNA than blood because of all of the oral bacteria. 2  Most common type of bacteria in saliva is Streptococcus, in a mostly harmless form. 3  Saliva spreads molecules to the taste receptors on the tongue.