Iran Biologists

2021-09-06 10:18:19 Insulin Production and Type 1 Diabetes

@cytology
@medterms
@IranBiologists
@essential_biochemistry باز کردن / نظر دهید

2021-09-06 10:18:19 Clonal Selection Theory

is a scientific theory in immunology that explains the functions of cells of the immune system (lymphocytes) in response to specific antigens invading the body

The theory states that in a pre-existing group of lymphocytes (specifically B cells), a specific antigen activates only its counter-specific cell, which then induces that particular cell to multiply, producing identical clones for antibody production. This activation occurs in secondary lymphoid organs such as the spleen and the lymph nodes. In short, the theory is an explanation of the mechanism for the generation of diversity of antibody specificity.
The animation shows how clonal selection works during a bacterial infection of the throat.

#Clonal_Selection_Theory
#WEHImovies

@cytology
@medterms
@IranBiologists
@essential_biochemistry باز کردن / نظر دهید

2021-08-28 20:25:03 Epigenetics_ X inactivation:
X inactivation is a vital process that occurs in all DNA-containing cells of the female body.X inactivation is a type of gene dosage compensation.
Because females receive two X chromosomes, they inherit two copies of many of the genes that are needed for normal function. Extra copies of genes or chromosomes can affect normal development. An example is Down's syndrome, which is caused by an extra copy of part or all of chromosome 21.

In female mammals, a process called X inactivation has evolved to compensate for the extra X chromosome. In X inactivation, each cell 'switches off' one of its X chromosomes, chosen at random, to ensure the correct number of genes are expressed, and to prevent abnormal development
#WEHImovies
#X_inactivation

@cytology
@medterms
@IranBiologists
@essential_biochemistry باز کردن / نظر دهید

2021-08-28 20:25:03 How does DNA fold? The loop extrusion model

#Clonal_Selection_Theory
#WEHImovies

@cytology
@medterms
@IranBiologists
@essential_biochemistry باز کردن / نظر دهید

2021-08-28 20:25:03 Chromatin structure

Euchromatin and Heterochromatin regulation

#Euchromatin
#Heterochromatin

@cytology
@medterms
@IranBiologists
@essential_biochemistry باز کردن / نظر دهید

2021-08-28 20:25:02 Multi Scale Modeling of Chromatin and Nucleosomes

@cytology
@medterms
@IranBiologists
@essential_biochemistry باز کردن / نظر دهید

2021-08-28 20:25:02 DNA 3D Animation, Chromosome Structure Animation

@cytology
@medterms
@IranBiologists
@essential_biochemistry باز کردن / نظر دهید

2021-08-28 20:25:02 Kinetochore and mitosis

@cytology
@medterms
@IranBiologists
@essential_biochemistry باز کردن / نظر دهید

2021-08-11 22:19:23 Ribosome
@cytology
@medterms
@IranBiologists
@essential_biochemistry باز کردن / نظر دهید

2021-08-11 22:19:23 Angioplasty - Medical animation
آنژیوپلاستی :ترمیم جراحی یا رفع انسداد رگ خونی ، به ویژه عروق کرونر
@cytology
@medterms
@IranBiologists
@essential_biochemistry باز کردن / نظر دهید