The typhus virus contained in the blood of guinea pigs at the height of the experimental disease remains infective for 31 days in collodion sacs placed within the abdominal cavity of guinea pigs.

BACKGROUND AND OBJECTIVES Cervix remodeling (CRM) is a critical process in preparation for parturition. Early cervix shortening is a powerful clinical predictor of preterm birth, and thus understanding how CRM is regulated is important for the prevention of prematurity. Humans and other primates differ from most other mammals by the maintenance of high levels of systemic progesterone concentrat...

1. Filtrates from B. coli, B. typhosus, or meningococci injected into the skin of guinea pigs do not produce visible inflammation. When these injections are followed by intravascular injections of the same material, hemorrhages do not occur in the skin. 2. Guinea pigs sensitized to horse serum react with redness and edema to 0.1 or 0.01 cc. of horse serum injected into the skin, and subsequent ...

The objective of the study is to investigate the anti-snake venom activities of a local plant, Hibiscus aethiopicus L. The H. aethiopicus was dried and extracted with ethanol. Different assays were performed according to standard techniques, to evaluate the plant's acute toxicity and its antivenom activities. The results of evaluating the systemic acute toxicity of the H. aethiopicus extract us...

A spontaneous generalized visceral disease of guinea pigs, characterized by the presence of intranuclear inclusion bodies of the herpes type, is described. The possible relation of this disease to the salivary gland virus infection of guinea pigs is discussed.

Immunization of mice or guinea pigs with BCG rendered all or most of the histiocytes of these animals resistant to necrotization by virulent H37Rv; this cellular resistance was mediated by immune serum. Immune mouse histiocytes (from BCG-immunized animals) were able to induce cellular resistance in normal homologous and heterologous (rabbit) animal species; mouse histiocytic ribosomes were also...

We determined the pattern of attachment of the avian-origin H7N9 influenza viruses A/Anhui/1/2013 and A/Shanghai/1/2013 to the respiratory tract in ferrets, macaques, mice, pigs, and guinea pigs and compared it to that in humans. The H7N9 attachment pattern in macaques, mice, and to a lesser extent pigs and guinea pigs resembled that in humans more closely than the attachment pattern in ferrets...

The concept of mass vaccination of large populations by inhalation of a vaccine in the form of an aerosol [Aleksandrov and Gefen, J. Microbiol. Epidemiol. Immunobiol. (USSR) 31:997, 1960; Sawyer, Kuehne, and Gochenour, Military Med. 129:1040, 1964] has a strong appeal. Aerosol vaccination could immunize a maximal number of people in a minimal period of time, and possibly could confer superior p...

Abstract It was the first UK meteorite fall for 30 years. Here we gather story of a remarkable community hunt involving pandemic precautions, social media spikes and some very lucky guinea pigs.

1. When toxic filtrates from cultures of B coli, B. typhosus, or meningococci are injected into the blood stream, peritoneal cavity, or subcutaneous tissue of tuberculous guinea pigs, the skin at the site of a tuberculin reaction becomes hemorrhagic. The extent of the hemorrhage is proportional to the severity of the tuberculin reaction demonstrable by tests with various dilutions of tuberculin...