Dr. Jones performed a vitamin supplementation study. She had 6 subjects, all of which were men age 18-22. The subjects took 10 mg of vitamin B6 once a day for 10 days. At the end of the study, the subjects reported increased stamina and an average increase in muscle of 1.3 pounds. Which of the following statements is TRUE regarding this study? a. The study had a control group.
b. The study was well designed concerning the number of subjects and the duration.
c. The results are applicable to men and women.
d. Public recommendations should be made about the benefits of vitamin B6 supplementation and increased stamina and muscle mass.
e. None of the above

this protocol provides a detailed procedure for co-immunoprecipitation (co-ip) to identify protein–protein interactions.

americans began to notice growing differences between the northern and southern sections of the country. there were more people living in cities in the north, which made it more urban. more people lived on farms in the south, which made it more rural. while many people were farmers in the northern states, there were now other ways to make a living, such as working in mechanical cotton gins factories manufacturing cloth, tools and other goods. people in the north supported high tariffs on goods imported from europe because the extra cost encouraged people to “buy american” instead. in the southern states, planters did not like tariffs because they sold most of their production to europe and bought their tools from there as well. southerners believed the protective tariff was something that only northern factory owners keep their profits high. so the southern politicians came up with an idea. they would opt out. they would simply ignore the protective tariff. it was ‘null and void’ in south carolina. the state would not collect the taxes on goods imported into south carolina, no matter what the president said they had to do. this decision led to the nullification crisis.

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explanation:

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