https://www.khanacademy.org/science/biology/human-biology/immunology/v/types-of-immune-responses-innate-and-adaptive-humoral-vs-cell-mediated 2023-12-04T19:02:25.924542584Z Types of immune responses: Innate and adaptive, humoral vs. cell-mediated The immune system is divided into nonspecific (innate) and specific (adaptive) responses. Nonspecific defenses, like skin and stomach acid, block pathogens indiscriminately. Specific defenses, such as B and T lymphocytes, adapt to specific pathogens after exposure. B lymphocytes are part of the humoral response, dealing with pathogens in body fluids. Sal Khan video https://cdn.kastatic.org/googleusercontent/j95EjRIg4fkrVfKTFJyQzfAqg_5x15-AIUIZWSx0VK25PzRl-_AAfG8rBUbl-tJeglOliaMbM3TSx2NUioUM5Q Types of immune responses: Innate and adaptive, humoral vs. cell-mediated The immune system is divided into nonspecific (innate) and specific (adaptive) responses. Nonspecific defenses, like skin and stomach acid, block pathogens indiscriminately. Specific defenses, such as B and T lymphocytes, adapt to specific pathogens after exposure. B lymphocytes are part of the humoral response, dealing with pathogens in body fluids. https://cdn.kastatic.org/ka-youtube-converted/rp7T4IItbtM.mp4/rp7T4IItbtM.mp4 487 Immunity or specific defence https://www.khanacademy.org/science/cambridge-o-level-biology-cie/x2a084a90105205d2:disease-and-immunity/x2a084a90105205d2:active-immunity-and-vaccination/a/adaptive-immunity 2021-04-29T08:00:16Z Adaptive immunity article https://www.khanacademy.org/science/ka-biology-grade-12/x406cf103e0507862:in-in-human-health-and-disease/x406cf103e0507862:in-in-types-of-immunity-and-the-immune-system/e/antibodies-and-acquired-immunity 2026-04-07T23:17:37.123726494Z Antibodies and acquired immunity Antibody structure, antigen binding site, heavy and light chains, disulphide bonds, b and t lymphocytes, humoral immunity. exercise https://www.khanacademy.org/science/ka-biology-grade-12/x406cf103e0507862:in-in-human-health-and-disease/x406cf103e0507862:in-in-types-of-immunity-and-the-immune-system/e/acquired-immunity 2024-08-15T06:51:54.562347673Z Acquired immunity Humoral vs cell mediated immunity, antibodies, b lymphocytes and t lymphocytes, primary and secondary immune response. exercise https://www.khanacademy.org/science/grade-7-science-snc-aligned/x64f379bc07a3640a:immunity-and-diseases/x64f379bc07a3640a:immunity-or-specific-defence/v/active-passive-immunity-ur 2025-08-08T00:24:37.843818748Z Active & Passive immunity Created by Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Active & Passive immunity Created by Khan Academy https://cdn.kastatic.org/ka-youtube-converted/NkXtf9BOnug.mp4/NkXtf9BOnug.mp4 921 Immunity or specific defence https://www.khanacademy.org/science/cambridge-o-level-biology-cie/x2a084a90105205d2:disease-and-immunity/x2a084a90105205d2:active-immunity-and-vaccination/e/active-and-passive-immunity 2026-04-07T23:17:37.123726494Z Active and passive immunity Active vs passive immunity exercise