Boric acid in preservation of urine.
D001888:Boric Acids; D005557:Formaldehyde; D006801:Humans; D011309:Preservation, Biological; D013048:Specimen Handling; D013696:Temperature; D014556:Urine / Q000382:microbiology
D001888:Boric Acids; D005557:Formaldehyde; C032688:boric acid