General theories on the inactivation of viruses in the presence of a concentrated protein,
such as the allantoic fluid of chicken eggs, are not useful. That is, although sodium …

A mixture of benzalkonium chloride, Triton X100, and citric acid (Resiguard F) had a marked
virucidal effect on lipid-containing deoxyribonucleic and ribonucleic acid viruses, such as …

A quaternary ammonium compound (QAC) was evaluated for its virucidal efficacies with
food additive grade calcium hydroxide (FdCa (OH) 2). When the QAC was diluted 1: 500 …

Factors affecting ether inactivation of infectious bovine rhinotracheitis virus were studied.
Complete inactivation of virus preparations containing 8 X PFU per ml resulted from reaction …

MATERIALS AND METHODS Preparation of viral inocula. Influenza A virus. The PR-8 strain
of influenza A virus was maintained by serial passage of 0.2 ml amounts of dilute inocula (10 …

Allantoic fluids containing either A2/Aichi/68 or B/Mass/66 influenza viruses were absorbed
onto columns of calcium phosphate. Approximately 98% of non-viral protein was removed …

This paper reports the quantitative results obtained in a comparative study of different
methods of influenza virus cultivation. The methods studied were cultivation in a medium of …

A study was made of conditions under which reactivation of HgCl2-inactivated influenza A
virus (PR8 strain) would ocur in the chick embryo by the use of aqueous BAL. The following …

MATERIALS AND METHODS Viruses. The isolates of infectious bronchitis virus used were:
42 (Beaudette), 41 (Massachusetts), 46 (Connecticut), and 97 (Iowa). IBV-42 had been …

The virus of influenza grown in allantoic fluid of chick embryos can be pre-cipitated in a
stable form with alum and the precipitate redissolved in sodium citrate. This procedure does …