Figure 4 shows a series of events for the response in innate immune defense. Rajah 4 menunjukkan siri peristiwa bagi tindak balas dalam pertahanan keimunan inat. Mast cell Pathogen Patogen Sel mast Cytokines Sitokin Histamine Histamina Pathogen Patogen J K Figure 4 Rajah 4 State ONE main event happening in J in fighting pathogens. Nyatakan SATU peristiwa utama yang berlaku di J dalam melawan pathogen. i. ii. Natural killer cell has the ability to kill virus-infected cells and tumour cells rapidly. How do natural killer cells in event K recognise and kill these cells? Sel pembunuh semula jadi (sel NK) mempunyai keupayaan untuk membunuh virus dan sel tumor dengan cepat. Bagaimanakah sel-sel NK dalam peristiwa K mengenalpasti dan membunuh sel-sel ini?

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Defense Mechanism

Circumstances influence and compel people to behave in a certain way. One such behavior is a defense mechanism. It is employed by people to escape from unpleasant circumstances, thoughts and actions. Defense mechanisms are, thus, psychological strategies that help to avert and avoid unwanted feelings such as guilt or shame and situations such as threat and danger.