Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Tissue Culture
It is an important technique for maintaining a'pm or piece of animal or plant tissue alive after their culture dishes. It is necessary to provide an environment in which cells can live and mulaiply over a periOd of time. Therefore. different media containing mixture of salts, amino acids, vitamins, Wwth factm etc. are used for this purpose. There art some special typeg of cul- media such as Balanced Sak Solution (BSS), and Essential Minimal Medium (EMM).
Cultures prepared directly from the tissue o{ an organism arc called prlmuy cultures. For obtaining the primary cultures, the organ is removed in a sterile atmosphere so as SO make it free from bacteria and other foreign bodies. Then it is cut into small pieces and treated with trypsin. Trypsin has the property of dissociating cell aggregates into a suspension of single cells, with affecting their viability. Cultures prepared frorn cells which were removed from primary cultures form sc~odalryc ultures. Such cells show che properties of the parent body frorn which they were obtained, for example, fibrbblasts secrete collagens; cells derived from embryonic skeletal muscle form muscle fibres. These phenomena which otherwise cannot be studied in intact tissues are easily studied by this technique.Some cells show prolonged growth and di~ide~indefinjteilny vitro. These cells are called 'variant cells'. Such cells grow or propagate in a'linear Order indefinitely to form a cell line. Some commonly used cell lines are BHK 21 and Human HeLa cells which are derived from fibroblast of a hamster and epithelial cells of man respectively.
Many of these cell lines were derived from tumor like growth. All these cells are capable of dividing indefinitely in tissue culture and they express at least some of the properties which are different from the cell of origin. BHK 21 cells, and HeLa cells. are capable bf growing in suspension whereas other cell lines requin a solid culture substratum for their growth.
Unlike variant cells, cancer cells divide indefinitely in vivo (within the living organism) as well as in vitro (in the experimental conditions). They grow rapidly compared to normal . cells in a tissue culture dish. Tissue culture is an important technique which is used to study the fundamental problems in cell biology. One of the major advancements in tissue culture is cloning. A clone is a population of cells derived from a single parent cell.
Developmental Patterns - Metazoa The metazoans or Animalia can be divided into two groups on the basis of body symmetry. The bilateral metazoans can be divided into two great
Define Recommended Dietary Allowances for Vitamin D? The recommendations of vitamin D are expressed as IU. 1 IU is defined as the activity contained in 0.025 mcg of cholecalci
explain why it is essential that muscle cells, during anaerobic respiration, convert pyruvic acid(pyruvate) into lactic acid, even though the conversion results in an accumulation
How can the concept of recombination frequency be used in genetic mapping? The Genetic mapping is the determination of the location of the genes in a chromosome. Besides determ
If jean-Baptiste de Lamarck was correct, than a. Natural selection would lead to the spread of favourable traits within a population b. Finches that stretched their beaks to access
Q What are the hyphae and the mycelium of pluricellular fungi? The major structures of pluricellular fungi are the hyphae threadlike filaments made of contiguous uni or multinu
The use and transfer of energy in all cells involves same compound, ATP. The letters ATP stand for chemical: a) Adenosine triphosphate b) Aluminum trioxide c) Atrophine t
Which type of reproductive structure has a better chance of survival if there was a sudden temperature change in its environment? A.)asci B.)zygosporangium C.)basidium D.)lichen
What are some biological examples in which lysosomic enzymes play a fundamental role? The remodelation of the osseous tissue, the function of acrosomes in sperm cells and the e
Q. Where can RNA are found within cells? In the eukaryote cell nucleus the RNA can be found to dispersed in the nuclear fluid, along with the DNA, and as the main constituent o
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd