Although there are similarities between bacteria and human cells, there are many differences as well. Antibiotics work by affecting things that bacterial cells have but human cells donât. For example, human cells do not have cell walls, while many types of bacteria do. The antibiotic penicillin works by keeping a bacterium from building a cell wall. Bacteria and human cells also differ in the structure of their cell membranes and the machinery they use to build proteins or copy DNA.
We need to recommend the Oticon Dual XW Hearing Aid, which costs around $4,300. You can find it at discounts of down to $2,800 and you can thus take advantage of wireless technology, superior sound quality and even included Bluetooth connectivity.
The manufacturer sells the hearing aid for $400 to $600 to a retailer or audiologist, who then sells the device for about $2,000. Prices at Audicus.com range from about $400 to $600 per hearing aid. For that price, you can consult with Audicus's audiologists by phone or online. The price also includes a five-year warranty, and if customers aren't satisfied they can return the device without cost.