Immunomagnetic SeparationCryptosporidium parvumEscherichia coli O157OocystsMagneticsAntibodiesFecesPolyvinylsNeoplastic Cells, CirculatingSensitivity and SpecificityCryptosporidiumParasitologyAntibodies, MonoclonalAntibodies, BacterialShiga Toxin 1Cell SeparationFood MicrobiologyEvaluation Studies as TopicPolymerase Chain ReactionGiardiaBacteriological TechniquesAntibody SpecificityPolystyrenesCattleAntibodies, ViralWaterWater MicrobiologyCattle DiseasesFlow CytometryColony Count, MicrobialMilkEscherichia coli InfectionsDNA, BacterialAntibody FormationAntibodies, NeutralizingCulture MediaFluorescent Antibody TechniqueAntibody Affinity