While you read up on vdj, know that the heavy chain has the vdj and there is dna rearrangement. know the l and h chains are made separately in the cytoplasm by means of disulfide ! the last step is the addition of the carbohydrate moiety. (look and remember my capital
second, at first, all b lymphocytes carry igm specific then after undergo class switching to the others (if you were lost here, you really need to know immuno and review)

In the kingdom of saudi arabia the government controls every aspect of oil production which makes up the majority of the country's economy. while other businesses are owned by individuals, the biggest segment of saudi arabia's economy is oil production. saudi arabia's economy would best be described as a) entirely market. b) almost entirely command. c) a mixture between just market and traditional. d) a mixed economy with large amounts of command.