Hepatitis A Virus. 1  Overview: Hepatitis A is a liver infection caused by the hepatitis A virus (HAV). HAV was first identified in 1973 as an icosahedral, non-enveloped virus with a diameter between 27 nm (nanometres) and 32 nm (Figure 1). The virus is a member of the genus Hepatovirus and belongs to the Picornavirus clade.
New Passport Instructions. Applicants must complete the DS-11 application form. The signature line will need to be left blank until the acceptance agent instructs you to sign it. In this and in all other cases below, two copies of the letter of authorization will then need to be completed by hand and signed in black or blue ink.
Rating Newest Oldest. Best Answer: My husband works for the government (he's in charge of the computer systems that the FAA uses to keep track of planes). He signs the official documents in blue ink because when the paper is photocopied in black and white, the blue ink will show up as black on the copies. So, it's easy to tell the original from the copies by looking for the one with a blue signature. When I had to make out a will, and make certain other legal documents, I had to sign in blue.