White Blood cells

• What are phagocytes

  a type of white blood cell that engulf and digest pathogens and other foreign bodies
• Process of phagocyte:

  1️⃣recognise invading bacteriam as pathogen

  2️⃣phagocytes cell membrane fuses around bacterium englufing it

  3️⃣a lysome containing a digestive enzyme breaks down bacteria

  4️⃣the cell keeps the useful parts and expells the rest
• Where is a foreign antigen

  On a pathogen
• Where is a self antigen

  on a normal body
• Anti=

  antibodies
• Gens=


  Generators (only if foreign)
• Process of antibodies:

  1️⃣lymphocyte makes specific antibodies to fit onto the antigen

  2️⃣antibodies make pathogens stick together so its easier for the phagocyte to engulf it
• process of antitoxins

  1️⃣Antitoxins bind to toxins to prevent harm to human cells

  2️⃣phagocyte engulfs them
• What are antigens

  substances, often proteins, that trigger an immune response in the body, marking them as foreign and prompting the production of antibodies to neutralize or eliminate them