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An overview of early development of a zygote to an embryo. Embryonic and somatic stem cells.
Professor Saltzman describes the processes of fertilization and embryogenesis. Professor Saltzman then talks about the definition and classification of different types of stem cells, where stem cells are found in the body, and the potential for use of stem cells in treating diseases. Some challenges in this type of therapy are also discussed. Finally, Professor Saltzman introduces the exponential equation for cell growth, dX/dt = e^μt, an...more
Professor Saltzman continues his discussion of cell communication in the body, extending the description to the nervous and immune system. Professor Saltzman describes the mode of signal transmission in neurons: action potential in the axon, and neurotransmitter release at the synaptic cleft. He also introduces elements of the innate and adaptive immune system. The adaptive immune system is presented as a host/foreign antigen recognition s...more
Overview of B cells (B lymphocytes) and how they are activated and produce antibodies.
Redox reactions to drive Galvanic Cells.
August 21, 2008 presentation by Stacey Bent for the Stanford University Office of Science Outreach's Summer Science Lecture Series. Meeting the world's growing energy needs in a sustainable fashion is one of the most pressing problems of our time. Professor Bent introduces the scope of the energy problem and some of the options for sustainable energy, then will focus on two main devices: solar cells and fuel cells. Solar cells convert the...more
How cytotoxic T cells get activated by MHC-I/antigen complexes and then proceed to kill infected cells.
Introduction to helper T cells and their role in activating B cells.
Review of B cells, CD4+ T cells and CD8+ T cells.
