Phrases with «unknown composition»

Donald Smith, dean of Cornell's vet school, says the ill pets typically have spherical, brown crystals of unknown composition in their urine and, in some cases, in their kidneys as well. (scientificamerican.com)
Programming unknown compositions.... (firstthings.com)
At the age of 11, the patient was given nose drops of unknown composition for «allergies» and three years later her skin turned gray.» (clspress.com)
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