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readily affected by various agents

United States microbiologist (born in Poland) who developed the Sabin vaccine that is taken orally against poliomyelitis (born 1906)

very rich cookie containing ground almonds; usually crescent-shaped

An orderly succession; a line; a row, Any of several hardened steel tools with cutting ridges for forming, smoothing, or reducing especially metallic surfaces, transitive verb_ To smooth, reduce, or remove with or as if with a file, To sully or defile, intransitive verb_ To put or keep (papers, for example) in useful order for storage or reference, To send or submit (copy) to a newspaper To march or walk in a line