Chemical Factors Fungistatic fatty acid in sebum ·Low pH(3-5)of skin Lysozyme in perspiration,tears,saliva,and tissue fluids Low pH(1.2-3.0)of gastric juice Transferrins in blood find iron NO inhibits ATP production
• Fungistatic fatty acid in sebum • Low pH (3-5) of skin • Lysozyme in perspiration, tears, saliva, and tissue fluids • Low pH (1.2-3.0) of gastric juice • Transferrins in blood find iron • NO inhibits ATP production Chemical Factors
Normal Microbiota Microbial antagonism/competitive exclusion:Normal microbiota compete with pathogens
• Microbial antagonism/competitive exclusion: Normal microbiota compete with pathogens. Normal Microbiota
Formed Elements In Blood Erythrocytes(Red Blood Cells) Leukocytes(White Blood Cells) A.Granulocytes (stained) 1.Neutrophils (PMNs) 60-70%of leukocytes到 2.Basophils0.5-1购 3.Eosinophils(2-4%) Table 16.1
Formed Elements In Blood Table 16.1
Differential White Cell Count Percentage of each type of white cell in a sample of 100 white blood cells Neutrophils 60-70% Basophils 0.5-1% Eosinophils 2-4% Monocytes 3-8% Lymphocytes 20-25%
• Percentage of each type of white cell in a sample of 100 white blood cells Differential White Cell Count Neutrophils 60-70% Basophils 0.5-1% Eosinophils 2-4% Monocytes 3-8% Lymphocytes 20-25%