glyceraldehyde: a sweet crystalline aldehyde formed by the breakdown of sugars
aldehyde: any of a class of highly reactive chemical compounds; used in making resins and dyes and organic acids
ixodes scapularis: parasitic on mice of genus Peromyscus and bites humans; principal vector for Lyme disease in eastern United States (especially New England); northern form was for a time known as Ixodes dammini (deer tick)