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 data from the BLS shows the national median wage for medical and clinical laboratory technologists was $58,430 in 2013. As wages can be influenced by factors such as experience, location and certification, the overall salary range for laboratory technologists varied in 2013, from approximately $39,000 to $80,000. The national salary range from the BLS can be seen below: 10% - up to $39,940. 25% - $49,100.