Veterian Key

Chapter 56 Birnaviridae Birnaviruses derive their name from the two segments of linear, double-stranded RNA that make up their genome. The virions are non-enveloped, about 65 nm in diameter with icosahedral…

Chapter 54 Astroviridae The name of the family is derived from the Greek word astron meaning star and referring to the star-like surface structure of member virions. Astroviruses are non-enveloped…

Chapter 48 Adenoviridae Adenoviruses (from the Greek word adenos meaning gland) were first isolated from explant cultures of human adenoids. They are non-enveloped, icosahedral viruses, 70–90 nm in diameter, containing a…

Chapter 22 Francisella tularensis Genus Characteristics Fransicella species are tiny, pleomorphic, non-motile, Gram-negative coccobacilli. The genus Francisella can be distinguished from other genera of small Gram-negative coccobacilli using the features…

Chapter 50 Asfarviridae African swine fever virus was formerly assigned to the family Iridoviridae. Subsequently, the virus was listed as the only member of a floating genus termed ‘African swine…

Chapter 4 Molecular techniques in diagnostic microbiology The development of different nucleic acid amplification technologies has revolutionized the detection and characterization of microbial pathogens. The speed of these techniques has…

Chapter 27 Taylorella species Taylorella equigenitalis and the recently described Taylorella asinigenitalis (Jang et al. 2001), are Gram-negative rods about 0.8 × 5.0 µm in size. Both species are facultative anaerobes, non-motile,…

Chapter 1 Collection and submission of diagnostic specimens Choosing and Working with a Laboratory In choosing a laboratory clinicians must consider the cost of the service and the ease of…