European shares log fifth week of gains, Novo Nordisk shines

(Reuters) - European stocks clocked their fifth straight week of gains on Friday with investors buying into the oil and gas and banking sectors, and Novo Nordisk rising after U.S. approval of its oral diabetes drug.Investors also sought refuge in the so-called defensive sectors such as utilities , real-estate and food and beverages ahead of a week packed with economic data.The United Nations (UN) general assembly will also provide clues on the fallout from attacks on Saudi oil facilities last..