UPSC Current Affairs Preparation: The Hindu Analysis Watch expert analysis of ‘The Hindu’ dated 4th May 2021. Important news and views to boost... View Article
In March 2021, scientists for the first time observed a space hurricane over the Earth’s North Pole. What are space hurricanes? What causes a... View Article
Cells can gradually escape from the primary tumor, and spread across the adjacent tissues, travelling through the bloodstream or lymphatic system... View Article
Angiogenesis could result from natural responses to increased tissue size, and the spread of tumour cells to other tissues can depend on normal... View Article
The pace of mutation can be elevated by the acquisition of defects in the cellular machinery. Most of the cancer cells exhibit differing levels... View Article
Vast numbers of intracellular and extracellular proteins govern cell division, cell growth, cell death and the DNA damage response. In general,... View Article
Mutations that cause hyperactivity in a positive growth regulator tend to be genetically dominant; which is, a mutant gene on one chromosome... View Article
If the secondary follicles survive, tertiary follicles are engendered. The antral follicle is an identifying trait which is a fluid-filled... View Article
With the survival of primary follicles, the secondary follicles with follicular epitheliums including multiple rows are engendered. Now, this is... View Article
The size of a Graafian follicle is largely determined by the size of the antrum, which in turn is determined by the volume of follicular fluid.... View Article
A Graafian follicle is structurally defined as a heterogeneous family of comparatively large follicles (0.4 to 23 mm) that are distinguished by... View Article
In Folliculogenesis, a recruited primordial follicle grows, developing into a specialized Graafian follicle. It has the potential either to... View Article
Secondary follicles develop from the primary follicle. The secondary follicles closely resemble primary follicles, the exception being it is... View Article
Primordial germ cells move into the developing gonad early in embryogenesis. They then differentiate into oogonia which in turn proliferate by... View Article
Rarely, mutations in one allele of a tumour suppressor gene are inherited from one parent which highly accelerates tumour progression, as... View Article
Usually, the loss of tumour suppressor gene function necessitates the inactivation of both alleles of the gene. This asks for the two independent... View Article
Chronic tissue injuries and other forms of viral infections are considered to facilitate the formation of tumours by non-mutational mechanisms.... View Article
Benign tumours are differently named from malignant tumours present in the same tissue. In the colon or breast, most of the benign tumours are... View Article
The naming of cancers is based on many factors which include the tissue of origin, the pathological attributes of the tumour tissue and the stage... View Article
