Mannitol Salt Agar (MSA) is a selective and differential medium. The high concentration of salt (7.5%) selects for members of the genus Staphylococcus, since they can tolerate high saline levels. Organisms from other genera may grow, but they typically grow very weakly.
A chapbook is a pocket-sized booklet. The term chap-book was formalized by bibliophiles of the 19th century, as a variety of ephemera, popular or folk literature. Many different kinds of literature have been made into chapbooks, such as pamphlets, political and religious tracts, nursery rhymes, poetry, folk tales, children's literature and almanacs. When illustrations are included in chapbooks, they are considered popular prints. The term is derived from chapmen, chap coming from the Old English cÃ©ap meaning deal, barter, business, a variety of peddler, who circulated such literature as part of their stock.
A tube of ChapStick. ChapStick is a brand name of lip balm manufactured by Pfizer Consumer Healthcare and used in many countries worldwide. It is intended to help treat and prevent chapped lips, hence the name.Many varieties also include sunscreen in order to prevent sunburn.ts main competitors in the US, Carmex and Blistex, also use the popular lipstick-style tube for their lip balm products. In Iceland and in the United Kingdom, the product's main competitor is Lypsyl, made by Novartis Consumer Health and distributed in similar packaging to ChapStick.