To take the scalp of someone else in a dream is to steal their sense of self. Brush Holding a hair brush in a dream symbolizes your appearance and the work you carry out to achieve the image you desire. Dreaming of a paint brush generally indicates the appearance of your home and the work it takes or it'll take to achieve the image you want.
A protein that typically promotes cell division when a growth factor is present on the cell surface. Abnormal ras proteins, caused by genetic mutations, stimulate cell division and proliferation in the absence of a growth factor and facilitate the development of various cancers.
Ras is the prototypical member of the Ras superfamily of proteins, which are all related in 3D structure and regulate diverse cell behaviours. When Ras is 'switched on' by incoming signals, it subsequently switches on other proteins, which ultimately turn on genes involved in cell growth, differentiation and survival.