The easy answer is the white blood cells but there are various types of white blood cells ( leucocytes) involved including cell eating defensive cells (phagocytes) called neutrophils which are very small but capable of engulfing several pieces of damaged tissue and bacteria. These are amongst the first cells to take action. Monocytes are immature as they leave blood vessels and enter tissues but they mature rapidly into active cells called macrophages (means big eater) which can consume up to 100 bacteria or similar sized cellular debris before its death occurs.
Cells involved in specific defense include B and T lymphocytes. B cells produce antibodies that can recognize specific pathogens, while T cells can directly kill infected cells or coordinate immune responses. These cells are crucial for mounting a targeted and effective immune response against pathogens.
secreting acid that destroys potential pathogens that are swallowed
The immune system is the organ system involved in defense. It works to protect the body against pathogens, infections, and foreign substances by recognizing and responding to them.
the body's second line of defense against pathogens is the B cells.
The third line of defence against pathogens is called the Specific Immune Responce
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Lymphocytes
The immune system
It is the first line of defense against pathogens.
lymphocytes :)
The integumentary system (skin) and mucous membranes are the first line of defense. They provide a physical barrier against invasion of pathogens. Any break in this physical barrier, such as a cut, makes it easier for pathogens to enter your body.
The first line of Mitch's non-specific defenses is the physical barriers provided by the skin and mucous membranes. These barriers serve as the body's first line of defense against pathogens by preventing their entry into the body.