susceptible host, a series of coordinated events must rcumvent both innate and adaptive immunity. One of the first and most important features of host innate immunity is the barrier provided by the epithelial surfaces of the skin and the lining of the gut. The difficulty of penetrat- ing these epithelial barriers ensures that most pathogens never gain productive entry into the host. In addition to pro viding a physical barrier to infection, the epithelia also pro duce chemicals that are useful in

effector molecules that act to remove antigen b ren various mechanisms described in previous chap es antigen without A Second Exposure to Poison Oak May Result in Delayed-Type Hypersensitivity Gell and Coombs Classification IgE-Mediated (Type I) Hypersensitivity Antibody-Mediated Cytotoxic(Type) Hypersensitivity aImmune Complex-Mediated (Type Ill) Hypersensitivity

part of the body to another. This is espe- ially true of lymphocytes, which circulate ly in the blood and lymph and, in common with at sites o Lymphocytes Attached to the Surface of a High-Endothelial Venule sLymphocyte Recirculation Cell-Adhesion Molecules Neutrophil Extravasation Lymphocyte Extravasation Chemokines-Key Mediators of Inflammation Other Mediators of Inflammation The Inflammatory Process

of the humoral branch of the immune system Research on complement began in the 1890s, when Jules bordet at the institut pasteur in paris showed that sheep antiserum to the bacterium vibrio cholerae caused lysis of the bacteria and that heating the antiserum destroyed its bacteriolytic activity. Surprisingly, the ability to lyse the bacteria was restored to the heated serum by adding fresh serum that contained no antibodies directed a The Functions of Complement

response involves lymphoid cells, inflammatory cells, and hematopoietic cells. The complex inter- lls are mediated by a group of pro- les to denote their role in secreted by body in activity of cyto- Class I Cytokine Receptors receptors,signal ptors, the role of cytokine Properties of Cytokines

possesses a tightly linked cluster of genes. the ma jor products play roles in intercellular recognition and in dis on of vesicular Stomatitis Virus Peptide (top) Class I Molecule H-2K General Organization and Inheritance of the MHC MHC Molecules and Genes that Detailed Genomic Map of MHC Genes Cellular Distribution of MHC Molecules antigens of Regulation of MHC Expression implicated MHC and Immune Responsiveness natural killer

外研版（三起）（2012）小学英语四年级下册Module 4 Unit 2 Will it be hot in Haikou$%习题(4)

Branch of discovery science focusing on proteins In 1994 defined as the complete set of proteins that is expressed and modified following expression by the entire genome in the lifetime of a cell. If we look at an organism it means that we are looking at the proteome of 3 trillion of cells and -1000

3.1 Amino Acids 75 acids, covalently linked in characteristic linear sequences 3.2 Peptides and Proteins 85 Because each of these amino acids has a side chain with 3.3 Working with Proteins 89 distinctive chemical properties, this group of 20 pre cursor molecules may be regarded as the alphabet in

外研版（三起）（2012）小学英语四年级下册Module 4 Unit 2 Will it be hot in Haikou$%习题(2)