A .PK after a stock ticker means it's listed by the OTC Markets Group Inc. This company lists stocks, usually over-the-counter securities, from market-makers and brokers who use the group to list selling prices as well ask and bid prices.
1 It may usually involves learning qualitative research methods such as literary analysis and ethnography.  Bachelor of Science (BS). This degree may usually requires a majority of coursework be taken in the sciences, such as life sciences, physical sciences, or mathematical sciences. It may be more focused on quantitative analysis, such as statistics and other forms of number-crunching.
BS Pharmaceutical Science. The Bachelor of Science in Pharmaceutical Sciences Program. The Bachelor of Science in Pharmaceutical Sciences (BSPS) is a four-year degree program that begins with a foundation of coursework in mathematics and the basic sciences -- chemistry, biology, and physics.