Einecs 286-569-8;restriction endonuclease apa I from*acetobacter P;Nuclease, restriction endodeoxyribo-, SphI ;RESTRICTION ENDONUCLEASE APA I FROM*ACET OBACTER PAS;RESTRICTION ENDONUCLEASE SPH I FROM*STRE PTOMYCES;apa i from acetobacter pasteurianus;sph i from streptomyces phaeochromogenes;RESTRICTION ENDONUCLEASE APA I