The absence of LOS seems to inhibit attachment to epithelial cells and therefore invasion of the host cells (31). A recent study using a mouse model showed a meningococcus mutant defective in LOS sialylation did not colonize (7).). ). ). ). ). ).).
open listing An open listing is almost like a for sale by owner listing. A home seller offers pay a sales commission, to one or more real estate agents, to the first one who brings an acceptable purchase agreement.
The law specifically cites sales contracts, closing statements, brokerage engagements, and leases. In addition, the law makes the less specific requirement that the licensee maintain other documents related to real estate closings or  transactions.. A firm's broker must decide which other documents to maintain. However, the broker should base that decision not only on what the license law requires.