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	1.	Letter: Serological evidence for infection of sheep with Leptospira interrogans serotype hardjo. [electronic resource] by Ris, D R Producer: 19751218 In: New Zealand veterinary journal vol. 23 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	2.	An indirect haemagglutination test for the detection of Brucella ovis antibodies. 2. Comparison of the indirect haemagglutination test with other diagnostic methods. [electronic resource] by Ris, D R Producer: 19710407 In: New Zealand veterinary journal vol. 12 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	3.	The persistence of antibodies against Brucella ovis and Brucella abortus in rams following vaccination: a field study. [electronic resource] by Ris, D R Producer: 20050818 In: New Zealand veterinary journal vol. 15 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	4.	The failure of genus-specific serological tests to detect leptospirosis in cattle and rabbits. [electronic resource] by Ris, D R Producer: 19760209 In: New Zealand veterinary journal vol. 23 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	5.	Limitations of the use of 5-fluorouracil as a selective agent for the isolation of leptospirae. [electronic resource] by Ris, D R Producer: 19740308 In: Applied microbiology vol. 27 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	6.	The complement fixation test for the diagnosis of Brucella ovis infection in sheep. [electronic resource] by Ris, D R Producer: 19750329 In: New Zealand veterinary journal vol. 22 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	7.	The bacteriology and serology of ewes inoculated with viable Brucella ovis organisms. [electronic resource] by Ris, D R Producer: 19700619 In: New Zealand veterinary journal vol. 18 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	8.	The serology of calves vaccinated and challenged with Leptospira interrogans serotype pomona. I. Agglutination and complement fixation reactions. [electronic resource] by Ris, D R Producer: 19780828 In: New Zealand veterinary journal vol. 25 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	9.	Prevalence and predictive value. [electronic resource] by Ris, D R Producer: 20050926 In: New Zealand veterinary journal vol. 34 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	10.	Use of hamster antisera in the preliminary differentiation of Leptospira interrogans servars hardjo and balcanica. [electronic resource] by Ris, D R Hamel, K L Producer: 19781027 In: Journal of medical microbiology vol. 11 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	11.	Leptospira interrogans serovar pomona vaccines with different adjuvants in cattle. [electronic resource] by Ris, D R Hamel, K L Producer: 19800119 In: New Zealand veterinary journal vol. 27 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	12.	The detection of Leptospirae in cattle urine. [electronic resource] by Ris, D R Hamel, K L Producer: 19790425 In: New Zealand veterinary journal vol. 26 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	13.	Complement fixing and agglutinating antibody responses and Leptospiruria in calves inoculated with leptospira serotypes pomona, hardjo, copenhageni or ballum. [electronic resource] by Hodges, R T Ris, D R Producer: 19740823 In: New Zealand veterinary journal vol. 22 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	14.	Titres after leptospiral vaccines. [electronic resource] by Ris, D R Hamel, K L Producer: 20051004 In: New Zealand veterinary journal vol. 30 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	15.	The isolation of leptospires from an air-conditioning plant. [electronic resource] by Ris, D R Hamel, K L Producer: 19800215 In: The New Zealand medical journal vol. 90 Availability: No items available. Save to lists Add to cart (remove)
	16.	The use of a cathodic antigen in the immunoelectrophoretic serodiagnosis of Echinococcus granulosus in sheep. [electronic resource] by Hamel, K L Ris, D R Producer: 19821202 In: Veterinary immunology and immunopathology vol. 3 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	17.	The preliminary differentiation with factor sera of Leptospira interrogans serovars hardjo and balcanica. [electronic resource] by Ris, D R Hamel, K L Producer: 19810421 In: New Zealand veterinary journal vol. 28 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	18.	An unusual serological response in cattle after use of a commercial leptospiral combined hardjo-pomona vaccine. [electronic resource] by Ris, D R Hamel, K L Producer: 20051004 In: New Zealand veterinary journal vol. 30 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	19.	Natural transmission of Johne's disease to feral goats. [electronic resource] by Ris, D R Hamel, K L Weaver, A M Producer: 20050929 In: New Zealand veterinary journal vol. 36 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	20.	Comparison of an enzyme-linked immunospecific assay (ELISA) with the cold complement fixation test for the serodiagnosis of Brucella ovis infection. [electronic resource] by Ris, D R Hamel, K L Long, D L Producer: 20051004 In: New Zealand veterinary journal vol. 32 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)

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Your search returned 24 results.