21. These patients are classified as XP complementation group F ( XP-F ). 22. This gene encodes a member of the Fanconi anemia, complementation group A protein. 23. GSTP1 has been shown to interact with Fanconi anemia, complementation group C and MAPK8. 24. The set of propositions is ordered by the natural ordering of sets and has a complementation operation. 25. Generally, the algebra associated with a logical system was found to be a type of complementation . 26. The clinical phenotype of mutational defects in all Fanconi anemia ( FA ) complementation groups is similar. 27. Thus, the complementation property of perfect graphs can provide an alternative proof of Dilworth's theorem. 28. The encoded protein forms a multiple-protein RNA editing holoenzyme with APOBEC1 complementation factor ( A1CF ). 29. However the complement laws give the fundamental properties of the somewhat inverse-like unary operation of set complementation . 30. In genetics, "'complementation "'occurs when two American geneticist Edward B . Lewis.