West Virginia borders Pennsylvania and Ohio to the north.
BB Biotech AG -LRB- Bank am Bellevue -RRB- is a Swiss investment company in the field of biotechnology .. biotechnology. biotechnology. Swiss. Switzerland. investment company. investment company. Since 1993 it is listed on the SIX Swiss Exchange , since 1997 on the German TecDAX and since 2000 on the Italian Borsa Italiana .. Swiss. Switzerland. SIX Swiss Exchange. SIX Swiss Exchange. TecDAX. TecDAX. Borsa Italiana. Borsa Italiana. At of March 31 , 2015 the six largest holdings in the BB Biotech portfolio were -LRB- in order of value -RRB-  : a 10.7 % stake in Celgene ; 9.5 % of Isis Pharmaceuticals ; , 9.1 % of Incyte , 7.3 % of Gilead Sciences ; 7.3 % of Actelion ; 4.6 % of Agios Pharmaceuticals .. Celgene. Celgene. Gilead Sciences. Gilead Sciences. Actelion. Actelion