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Johne's disease
Science; General science
A slowly progressive diarrheal disease that causes major economic loss to the cattle industry; also known as paratuberculosis. It is caused by Mycobacterium avium ss ...
notomyotida
Science; General science
A small and distinctive order of valvatacean Asteroidea with long, straight-sided arms and relatively small disks. The skeleton is differentiated into marginals, actinals, and ...
coronoidea
Science; General science
A small class of “arm”- and brachiole-bearing, stemmed echinoderms in the subphylum Crinozoa, based on five genera known from the Middle Ordo-vician to Late Silurian of Europe and ...
cryptophyceae
Science; General science
A small class of biflagellate unicellular algae (cryptomonads) in the chlorophyll a–c phyletic line (Chromophycota). In protozoological classification, these organisms ...
prasinophyceae
Science; General science
A small class of mostly motile, photosynthetic, unicellular algae in the chlorophyll a - b phyletic line (Chlorophycota). It is segregated from the Chlorophyceae primarily on ...
eustigmatophyceae
Science; General science
A small class of nonmotile, photosynthetic, unicellular algae, segregated from the class Xanthophyceae (Tribophyceae) on the basis of cytological, ultrastructural, and biochemical ...
raphidophyceae
Science; General science
A small class of poorly known biflagellate unicellular algae (raphidomonads) in the chlorophyll a – c phyletic line (Chromophycota). It is sometimes called Chloromonadophyceae, ...
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