CANCER

Humanity has faced many challenges in its history. Smallpox, COVID-19, HIV/AIDS, Ebola, The BLACK Death, The Spanish FLU, Cholera and the list goes on and on. However, one remains an unsolved mystery. This presentation's topic is CANCER. Which is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. CANCER begins with an abnormal cell that spreads through your body. However, our bodies usually deal with this really easily, with minimal injury. But sometimes, some remains of these abnormal cells that live evolve to counter our body’s defences. Most likely, these are still harmless since our body has an extremely detailed and powerful immune system that has been proven effective against most foreign or even internal threats. However, sometimes, these cells evolve too fast and too strong for our body's immune system and turn into a tumour. 2 types of tumours are either Benign (non-cancerous) or Malignant (cancerous). In this case, we are talking about Malignant (cancerous, and after a while (if left untreated), in some cases, this becomes CANCER. Which happens in every part of our body. Your body has Immune cells to destroy and eliminate CANCER cells, such as Macrophages (can engulf and digest pathogens) and Neutrophils (Which bite and break down bacteria using toxic chemicals and self-destruct during near death so they can attack even more by injecting toxic chemicals to attack pathogens after its passing). NK Cells (Natural killer cells) attack stressed cells, tumour cells, and other dangerous pathogens. It allows an extremely fast immune response, and while being in the innate immune system, it alerts and helps mobilise the adaptive immune system. Killer T-Cells/Cytotoxic T-cells: Most Killer T-cells recognise a specific antigen and destroy that particular antigen or its close relatives. It develops this unique receptor when it is matured in the Thymus (I had to oversimplify this presentation; I will make a specific presentation for this process). Dendritic cell/Immune intel gatherer takes a piece of the pathogen and rips it apart, then goes to all the T-cells and finds one with a specific T-cell 

the receptor with the pathogen, and then it multiplies and splits into 2 main groups, Helper T-cells and Killer T-cells/Cytotoxic T-cells. This process takes up an average of 2 weeks. (I had to oversimplify again). B-cells produce antibodies that play a crucial role in defeating pathogens, and they have to be activated by helper T-cells.