Although slaves had been sold in the American colonies since at least 1619, slave labor did not come to represent a significant proportion of the labor force in any part of North America until the last quarter of the 17th century. After that time, the numbers of slaves grew exponentially.
A Pharmacologist earns an average salary of $103,686 per year. For the first five to ten years in this position, salary increases sharply, but any additional experience does not have a big effect on pay.
Salary Overview. According to the U.S. Bureau of Labor Statistics (BLS), the mean yearly wage for medical and clinical lab technicians of all experience levels was $39,340 as of May 2012 (www.bls.gov). The 10th-90th percentile range of these professionals earned between $24,790 and $57,710.ost medical and clinical lab technicians were employed at hospitals, laboratories and physicians' offices in May 2012, reported the BLS. Hospitals paid workers a mean salary of $40,050 per year, which was slightly higher than the overall mean wage for this profession.