Best Answer: Using single quotation marks around a word or phrase instead of double quotation marks is the standard way of indicating a quotation in British English. In normal, modern British English one uses single quotation marks, with double quotation marks reserved for a quotation within a quotation.
tubular secretion. the passage of substances from the blood in the peritubular capillaries to the tubular filtrate. Functions of tubular secretion. elimation of waste products not filtered by the glomerulus and regulation of the acid-base balance in the body through the secretion of hydrogen ions. what happens to the protein bound substances entering the peritubilar capillaries.
Type three secretion system (often written Type III secretion system and abbreviated TTSS or T3SS, also called Injectisome or Injectosome) is a protein appendage found in several Gram-negative bacteria. The ability of a T3SS to secrete a specific protein or to secrete at all. 2  In order to assay this, secretion is induced in bacteria growing in liquid medium. 3  The bacteria and medium are then separated by centrifugation, and the medium fraction (the supernatant) is then assayed for the presence of secreted proteins.