Abstract:
A vaccine for in ovo vaccination against avian coccidiosis produced by a method including obtaining the coccidial oocysts from a fecal suspension, homogenizing the fecal suspension, separating the oocysts from the fecal debris by either salt flotation using sodium sulfate or gas flotation using air, sporulating the oocysts using hydrogen peroxide and air sparging, bleaching the sporulated oocysts, washing the bleached oocysts, concentrating the sterile washed oocysts and combining the concentrates of various species of coccidial oocysts, and producing a vaccine. The method in whole or in part can be applied to other kinds of encysted protozoa to produce vaccines for various types of animals.
Abstract:
Oligonucleotide molecules for the detection of Giardia lamblia ( G. lamblia ) which molecules hybridise under medium to high stringency conditions to unique 18S rDNA/rRNA sequences of G. lamblia , and methods for the detection of the presence of viable cells of G. lamblia in samples using the oligonucleotide molecules.
Abstract:
The present invention describes an enzyme showing glutathionylspermidine synthetase-activity and being distinct from known enzymes with similar activities in several physicochemical parameters, a novel process to isolate said enzyme from Crithidia fasciculata, tools for the production thereof in genetically transformed organisms, and its use as a molecular target for the discovery of trypanocidal drugs.
Abstract:
The invention provides apparatus for implementing a computational system comprising: a colony of live microorganisms and a receptacle in which the microorganisms are able to be stimulated to cause a reaction or to modify their physiology or behaviour. Monitoring apparatus tracks the reaction or changes in the physiology or the behaviour of the microorganisms in response to stimulation; and processing circuitry makes calculations, including machine learning, based on or coupled with the reaction of the microorganisms, or their physiological or behavioural changes. The invention also proved a method of implementing a computational system comprising stimulating a colony of live microorganisms with a stimulus whose pattern is derived from input data, or allowing the stimulation with an external stimulus. The reaction or modification is monitored and output data based on the reaction or modification is derived.
Abstract:
提供了一种启动子及其用于表达疟原虫的外源基因上的应用,所述启动子选自:(1)包含有SEQ ID NO.1所示的核苷酸序列且在疟原虫中以稳定期特异性方式显示出启动子活性的DNA或其片段;或(2)与SEQ ID NO.1所示的核苷酸序列具有90%以上,优选95%以上同源性且在疟原虫中以稳定期特异性方式显示出启动子活性的DNA或其片段。通过合成NT1-9(SEQ ID NO.1)序列,发现以NT1-9序列为核心的核苷酸序列作为启动子都具有转录活性,可以适用不同的应用场合。
Abstract:
The present invention describes methods of identifying high-risk populations or individuals who have positive serology for T.gondii . These methods include obtaining a biological sample from a subject; determining the level of T.gondii cyst antigen antibody in the biological sample; and characterizing the biological sample in at least one of three categories.
Abstract:
Modified protozoa parasites comprising simultaneous expression on its surface of at least two variable surface proteins (VSP). The modified protozoa may also simultaneously express the complete repertoire of variable surface proteins. Protozoa show reduced expression of Dicer, RNA-dependant RNA-polymerase (RdRP) enzymes or both, wherein the RdRP gene and/or the Dicer gene has been silenced. The protozoan may be any protozoan showing an antigenic variation mechanism.
Abstract:
The present invention relates to improved methods for the production of omega-3 fatty acids by microorganisms belonging to the microflora of Thraustochytriales using a modified composition of the culture medium. In particular, the invention is directed to a process for the production of omega-3 fatty acids by culturing microflora, such as strains of Ulkenia, Thraustochytrium and/or Schizochytrium, in fermentors which includes the step of culturing the Thraustochytriales microflora in an environment of reduced sodium ions and increased potassium ions.
Abstract:
Protozoal cyclic GMP dependent protein kinases have been isolated and cloned. These enzymes may be used in screening assays to identify potential antiprotozoal agents.