\pɹˈaktɪs], \pɹˈaktɪs], \p_ɹ_ˈa_k_t_ɪ_s]\
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By Stedman, Thomas Lathrop
By William Hand Browne, Samuel Stehman Haldeman
By James Champlin Fernald
Word of the day
- NERVE FACTOR first a series neurotrophic factors that were found to influence differentiation sympathetic and sensory neurons. It is comprised of alpha, beta, gamma subunits. The beta subunit responsible for its growth stimulating activity.