Field of flowering potato plantsMan holding cardboard box filled with potatoesField of flowering potato plantsField of flowering potato plantsField of flowering potato plantsTractor in brown fieldPerson holding syringe in laboratoryPerson standing between rows of plants in fieldRows of plants in fieldTractor and truckSmiling person standing in green field holding gardening hoePeople sitting at long tables, reading ''Compendium of Potato Diseases" and "Potato Health Management"Person kneeling in field, holding child's handsPerson holding clipboard in front of rows of plants in fieldGroup of people standing in front of buildingPerson holding tweezers and sprouts in laboratoryField of flowering potato plantsPerson standing between rows of plants in fieldPotato plant flowersPeople sitting at table in laboratory, working with trays of bottle samplesPeople at table in laboratory, working with well platesPerson standing at table in classroomStudents sitting at tables in classroomtwo trucks harvesting potatoesVenhuizens and EilieenLab at workEilieen in a greenhouseJohn Venhuizen driving a tractorJohn Venhuizen driving a tractor Larry Krum InterviewJack dipping shoes in disenfectantlab staff transferring samples to ELISA plates Riding on a cartLab staff in classroomworkers in the fieldworkers collecting samplesworkers collecting more samplesWalking early generation seed plotsSome nice potatoesburbanks anyonetwo varieties Supreme LeaderPrototype trayshappily collecting samples

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