During pregnancy, these painless tightenings are called Braxton Hicks contractions. When you are having regular, painful contractions that feel stronger and last more than 30 seconds, labour may have started. As labour gets going, your contractions tend to become longer, stronger and more frequent. During a contraction, the muscles in your womb contract and the pain increases.
During initial stages of assimilation, Borg nanoprobes began attaching themselves to the victim's red blood cells, allowing them to circulate throughout the body. (VOY :  Scorpion ) Within minutes, the nanoprobes spread visibly through the capillaries of the victim's skin.
Assimilation is a process in which a minority becomes absorbed into the dominant society â socially, economically, and culturally. Symbolic interaction theorists look at two issues in relation to race and ethnicity. First, they look at the role of social interaction and how it reduces racial and ethnic hostility. Second, they look at how race and ethnicity are socially constructed.