| The dreadful Middle Passage could last from one to three months and epitomized the role of violence in the trade. |
| We explore the role of an important stress pathway, sympathetic nervous system release of norepinephrine and epinephrine, in tumor growth and metastasis. |
| He plays the role of a meek husband who has been emasculated by his domineering wife. |
| The moderator's role is to facilitate the discussion by asking appropriate questions. |
| They have very different conceptions of the proper role of government. |
| The role of the geosphere itself as a chemical containment barrier is relatively difficult to evaluate. |
