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What Are Stem Cells Genetics Biology FuseSchool with Английский subtitles   Complain, DMCA

our bodies are the ultimate factory

every cell has a specific job to do and

is shaped to do that job perfectly a

muscle cell is a muscle cell and only a

a nerve cell will only ever be a nerve

and a red blood cell will only ever be a

red blood cell the fate of each cell is

determined during the embryo stage and

then cannot be changed however cutting

edge research made a major discovery for

modern science there are these wonderful

cells that exist called stem cells

these cells have the ability to become

any type of cell because they are not

specialize­d scientists were hugely

excited by their discovery because they

can be used to repair damaged organs

they could also be used to help treat

diseases such as by making new brain

cells to treat people with parkinson'­s

disease or they could be used to repair

damaged immune systems and even reverse

paralysis or regrow lost limbs the

discovery of stem cells is huge for

modern medicine and could have a massive

impact there are two types of stem cells

in humans embryonic stem cells and adult

stem cells embryonic stem cells are

unspeciali­zed cells that can develop

into any type of cell adult stem cells

are also on specialize­d cells but whilst

they can develop into many types of

cells unlike embryonic stem cells they

cannot develop into every type of cell

adult stem cells come from tissues such

as bone marrow as in the name embryonic

stem cells can be removed from unused

embryos such as those left over from

fertility treatments for example whilst

the discovery of stem cells offers huge

potential for modern medicine there are

many social and ethical considerat­ions

that need to be taken into account a lot

of research was and still is needed to

find out exactly how they work and how

we can control them to do what we want

and not just grow uncontroll­ably stem

cells are already being used in

treatments currently in 2016 there is a

trial study underway to use stem cells

to reboot the immune system of multiple

sclerosis sufferers to enable them to

regain some mobility using stem cells to

treat diseases and conditions of the

blood and immune system are currently

the most widely used stem cell treatment

over 26 000 patients are treated with

blood stem cells in europe annually a

new stem cell treatment has recently

been approved for repairing damage to

the cornea stem cell treatments are also

being used in rhino conservati­on efforts

as well as other endangered species one

big social and ethical debate around

stem cells is therapeuti­c cloning this

is the concept of cloning a patient

growing an embryo from the clone cells

and then extracting stem cells from the

embryo to grow a specific organ needed

by the patient the patient's body would

not reject this organ as it is made from

the patient's own cells the ethical

debate focuses on defining when does

life start is the embryo alive people

also don't like the idea of us playing

god we will look at the process of

cloning in another video unspeciali­zed

stem cells also exist in plants and can

develop into the cells of flowers roots

or leaves unlike in animal cells some

plant cells do remain unspeciali­zed and

can then develop into any type of plant

cell the unspeciali­zed plant cells group

together into structures called

meristems whereas animals stop growing

in size when they are adults plants do

not this is because mary stems divide to

produce cells thus enabling plants to

continue to grow both in height and

width throughout their lives they also

produce cells that develop into flowers

and leaves so from this video you should

know that stem cells are present in

embryonic and adult animal cells and in

mary stems and plants stem cells are

unspeciali­zed and can develop into a

range of different cell types for

developmen­t growth and repair in animals

embryonic stem cells can turn into any

cell type whereas adult stem cells which

are found in bone marrow can only turn


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