Chapter 068 Hematopoietic Stem Cells (Part 2) pot

... Chapter 068. Hematopoietic Stem Cells (Part 2) Developmental Biology of Hematopoietic Stem Cells During development, blood cells are produced at different ... the so-called stem cell niche. Hematopoietic Stem Cell Microenvironment The concept of a specialized microenvironment, or stem cell niche, was first proposed to explain why cells derived from ......

Ngày tải lên: 07/07/2014, 01:20

... Else Can Hematopoietic Stem Cells Do? Some experimental data have suggested that hematopoietic stem cells or other cells mobilized into the circulation by the same factors that mobilize hematopoietic ... experimentally in the hematopoietic system. Taking advantage of the cell-surface markers that distinguish hematopoietic cells of varying maturity, stem cells, pr...

Ngày tải lên: 07/07/2014, 01:20

... daughter cells an event termed asymmetric cell division. The relative balance for these types of outcomes Chapter 068. Hematopoietic Stem Cells (Part 1) Harrison's Internal Medicine > Chapter ... Chapter 68. Hematopoietic Stem Cells Hematopoietic Stem Cells: Introduction All of the cell types in the peripheral blood and some cells in every tissue o...

Ngày tải lên: 07/07/2014, 01:20

... Chapter 068. Hematopoietic Stem Cells (Part 3) Excess Capacity of Hematopoietic Stem Cells In the absence of disease, one never runs out of hematopoietic stem cells. Indeed, ... proliferation. Hematopoietic stem cells have governing mechanisms that are distinct from the cells they generate. Hematopoietic Stem Cell Differentiation Hematopoietic...

Ngày tải lên: 07/07/2014, 01:20

... cross-matching obstacles. (2) Cord blood stem cells have Chapter 068. Hematopoietic Stem Cells (Part 4) Hierarchy of hematopoietic differentiation. Stem cells are multipotent cells that are the ... capacity, stem cells have an additional feature characterizing their proliferation machinery. Stem cells in most mature adult tissues are deeply quiescent. In...

Ngày tải lên: 07/07/2014, 01:20

... Chapter 018. Fever and Rash (Part 2) Centrally Distributed Maculopapular Eruptions Centrally distributed rashes, ... confused with Fordyce's spots (ectopic sebaceous glands), which have no erythematous halos and are found in the mouth of healthy individuals. Koplik's spots may briefly overlap with ... begins as discrete erythematous lesions, which become confluent as...

Ngày tải lên: 06/07/2014, 12:20

... initial stimulation by hypothermia, there is progressive depression of all organ systems. The timing of the appearance of these clinical manifestations varies widely (Table 20 -2). Without knowing ... hyperventilation suggests a central nervous system (CNS) lesion or one of the organic acidoses. A markedly depressed level of consciousness in a patient with mild hypothermia should raise s...

Ngày tải lên: 06/07/2014, 12:21

... motor neurons have their cell bodies in layer V of the primary motor cortex Chapter 023. Weakness and Paralysis (Part 2) Pathogenesis Upper Motor Neuron Weakness This pattern of weakness ... corticospinal neurons but innervate brainstem motor nuclei. Bulbospinal upper motor neurons influence strength and tone but are not part of the pyramidal system. The descending ventromedial...

Ngày tải lên: 06/07/2014, 13:20

... Chapter 026. Confusion and Delirium (Part 2) Epidemiology Delirium is a common disease, but its reported incidence ... environment where cognitive dysfunction is often difficult to appreciate in the setting of serious systemic illness and sedation. Delirium in the ICU should be viewed as an important manifestation ... the neuropsychological hallmark of delirium appears to have...

Ngày tải lên: 06/07/2014, 13:20

... contraction or expansion and imply abnormal Na + balance. Sodium Intake Chapter 046. Sodium and Water (Part 2) Water Excretion In contrast to the ingestion of water, its excretion is ... paraventricular nuclei of the hypothalamus and secreted by the posterior pituitary gland. The binding of AVP to V 2 receptors on the basolateral membrane of principal cells in the coll...

Ngày tải lên: 06/07/2014, 15:21