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- https://bio.libretexts.org/Courses/Community_College_of_Vermont/Human_Biology_(Gabor_Gyurkovics)/15%3A_Cell_Reproduction/15.02%3A_Cell_Cycle_and_Cell_DivisionCell division is the process in which one cell, called the parent cell, divides to form two new cells, referred to as daughter cells. How this happens depends on whether the cell is prokaryotic or euk...Cell division is the process in which one cell, called the parent cell, divides to form two new cells, referred to as daughter cells. How this happens depends on whether the cell is prokaryotic or eukaryotic. Cell division is simpler in prokaryotes than eukaryotes because prokaryotic cells themselves are simpler. Prokaryotic cells have a single circular chromosome, no nucleus, and few other organelles. Eukaryotic cells, in contrast, have multiple chromosomes contained within a nucleus.
- https://bio.libretexts.org/Bookshelves/Microbiology/Microbiology_(OpenStax)/19%3A_Diseases_of_the_Immune_System/19.05%3A_Cancer_Immunobiology_and_ImmunotherapyWhen control of the cell cycle is lost, the affected cells rapidly divide and often lose the ability to differentiate into the cell type appropriate for their location in the body. In addition, they l...When control of the cell cycle is lost, the affected cells rapidly divide and often lose the ability to differentiate into the cell type appropriate for their location in the body. In addition, they lose contact inhibition and can start to grow on top of each other. This can result in formation of a tumor. It is important to make a distinction here: The term “cancer” is used to describe the diseases resulting from loss of cell-cycle regulation and subsequent cell proliferation.
- https://bio.libretexts.org/Bookshelves/Human_Biology/Human_Biology_(Wakim_and_Grewal)/21%3A_Disease/21.7%3A_CancerCancer is actually a group of more than 100 diseases, all of which involve abnormal cell growth with the potential to invade or spread to other parts of the body. In general terms, cancer occurs when ...Cancer is actually a group of more than 100 diseases, all of which involve abnormal cell growth with the potential to invade or spread to other parts of the body. In general terms, cancer occurs when the cell cycle is no longer regulated due to DNA damage. The number of potential underlying causes of this DNA damage is great, so there are many different risk factors for cancer. Any cells that become cancerous divide more quickly than normal cells. They may form a mass of abnormal cells called a
- https://bio.libretexts.org/Courses/Community_College_of_Vermont/Human_Biology_(Gabor_Gyurkovics)/16%3A_Inheritance_and_Biotechnology/16.08%3A_Case_Study_Cancer_Conclusion_and_Chapter_SummaryRebecca's family tree, as illustrated in the pedigree above, shows a high incidence of cancer among close relatives. But are genes the cause of cancer in this family? Only genetic testing, which is th...Rebecca's family tree, as illustrated in the pedigree above, shows a high incidence of cancer among close relatives. But are genes the cause of cancer in this family? Only genetic testing, which is the sequencing of specific genes in an individual, can reveal whether a cancer-causing gene is being inherited in this family.
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/General_Biology_1e_(OpenStax)/3%3A_Genetics/16%3A_Gene_Expression/16.7%3A_Cancer_and_Gene_RegulationCancer is not a single disease but includes many different diseases. In cancer cells, mutations modify cell-cycle control and cells don’t stop growing as they normally would. Mutations can also alter ...Cancer is not a single disease but includes many different diseases. In cancer cells, mutations modify cell-cycle control and cells don’t stop growing as they normally would. Mutations can also alter the growth rate or the progression of the cell through the cell cycle. One example of a gene modification that alters the growth rate is increased phosphorylation of cyclin B, a protein that controls the progression of a cell through the cell cycle and serves as a cell-cycle checkpoint protein.
- https://bio.libretexts.org/Workbench/General_Ecology_Ecology/Chapter_8%3A_Life_Histories/3%3A_The_Evolution_of_Aging2015, Rando & Chang 2012), use of factors from young blood that restore the age-related loss of function of stem cells or synapses between nerve cells in the brain (Rando & Chang 2012, Mair & Dillin 2...2015, Rando & Chang 2012), use of factors from young blood that restore the age-related loss of function of stem cells or synapses between nerve cells in the brain (Rando & Chang 2012, Mair & Dillin 2008), and alteration of the composition of the microorganisms in the gut to a younger profile (Clark & Walker 2018, Kundu et al.
- https://bio.libretexts.org/Courses/Canada_College/Human_Biology_Biol_011_Textbook/08%3A_Inheritance/8.07%3A_Case_Study_Conclusion-_Cancer_and_Chapter_SummaryRebecca's family tree, as illustrated in the pedigree above, shows a high incidence of cancer among close relatives. But are genes the cause of cancer in this family? Only genetic testing, which is th...Rebecca's family tree, as illustrated in the pedigree above, shows a high incidence of cancer among close relatives. But are genes the cause of cancer in this family? Only genetic testing, which is the sequencing of specific genes in an individual, can reveal whether a cancer-causing gene is being inherited in this family.
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Biology_(Kimball)/10%3A_Mutation/10.01%3A_Mutations_-_Causes_and_SignificanceThis page discusses DNA mutations in living cells, their types (point mutations, indels, etc.), and diseases associated with them, like sickle cell anemia. It highlights the role of mutations in evolu...This page discusses DNA mutations in living cells, their types (point mutations, indels, etc.), and diseases associated with them, like sickle cell anemia. It highlights the role of mutations in evolution, gene duplication, and translocations, along with their rarity and varying rates across species. Specifically, C. elegans has a mutation rate of approximately 2.1 x 10^-8 per base pair per generation, with males contributing more due to mitotic divisions.
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Biology_(Kimball)/11%3A_Genomics/11.10%3A_Antisense_RNAThis page discusses the roles of messenger RNA (mRNA) and small RNAs in gene expression regulation and molecular biology. mRNA, often paired with antisense RNA, plays a role in genetic engineering and...This page discusses the roles of messenger RNA (mRNA) and small RNAs in gene expression regulation and molecular biology. mRNA, often paired with antisense RNA, plays a role in genetic engineering and gene expression control. RNA interference (RNAi) involves small interfering RNAs (siRNAs) and microRNAs (miRNAs) that can suppress gene expression and combat viruses.
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Biology_(Kimball)/12%3A_Cancer/12.02%3A_Cancer_Cells_in_CultureThis page examines mouse fibroblasts, highlighting the contrast between normal cells with contact inhibition and transformed 3T3 cells that lack this feature. It notes that while transformed cells can...This page examines mouse fibroblasts, highlighting the contrast between normal cells with contact inhibition and transformed 3T3 cells that lack this feature. It notes that while transformed cells can form tumors in test subjects despite not being cancerous, normal cells require specific nutrients and maintain a normal karyotype. In contrast, transformed and cancer cells can survive on simpler media and often exhibit abnormal karyotypes with irregular chromosome structures.
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Biology_(Kimball)/03%3A_The_Cellular_Basis_of_Life/3.24%3A_EndocytosisThis page explains the cellular process of endocytosis, which includes phagocytosis and pinocytosis for absorption of materials. It highlights receptor-mediated endocytosis for acquiring specific mole...This page explains the cellular process of endocytosis, which includes phagocytosis and pinocytosis for absorption of materials. It highlights receptor-mediated endocytosis for acquiring specific molecules like cholesterol. It also discusses familial hypercholesterolemia's link to atherosclerosis due to mutations in the apoB gene and the transportation of hydrophobic molecules in the bloodstream.
