| History tells us that whenever the State has failed to perform this role, the roles are reversed. |
| Protein tyrosine kinases play fundamental roles in signal transduction pathways. |
| In addition, our study contributes to a greater understanding of newly appointed CEOs in their roles as change agents. |
| His report recommends caution, saying that doctors currently lack sufficient expertise and that their roles remain unclear. |
| Understanding the role of women in the African-American community starts by examining the roles in Afro-American literature. |
| In addition to acting as a cellular scaffold, the cytoskeleton has roles in organelle transport, cell division, motility, and signaling. |
