A virus is basically a tiny bundle of genetic materialâeither DNA or RNAâcarried in a shell called the viral coat, or capsid, which is made up of bits of protein called capsomeres. Some viruses have an additional layer around this coat called an envelope. That's basically all there is to viruses. virus is basically a tiny bundle of genetic materialâeither DNA or RNAâcarried in a shell called the viral coat, or capsid, which is made up of bits of protein called capsomeres. Some viruses have an additional layer around this coat called an envelope. That's basically all there is to viruses.
For all United EconomyÂ® tickets, Premier Gold members are eligible for two complimentary checked bags at 70 pounds (32 kg) each for travel between the U.S., Canada, Puerto Rico and the U.S. Virgin Islands.
US Airways. You're allowed 1 carry-on bag and 1 personal item. 1  Your carry-on bag can be up to 45 inches (22 x 14 x 9 in) or 115 centimeters (23 x 36 x 56 cm) including handles and wheels. 2  Your personal item needs to be smaller than your carry-on item and must fit under the seat in front of you.ou are allowed on carry on and one personal item (purse, briefcase, laptop). Your carry-on bag is fine if itâs within the following limits: 1  22 length x 14 width x 9 height (45 linear inches). 2  Maximum weight: 25 pounds (11.5 kg).