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Elisa

The enzyme-linked immunosorbent assay (ELISA) (, ) is a commonly used analytical biochemistry assay, first described by Eva Engvall and Peter Perlmann in 1971. The assay uses a solid-phase type of enzyme immunoassay (EIA) to detect the presence of a ligand (commonly a protein) in a liquid sample using antibodies directed against the protein to be measured. ELISA has been used as a diagnostic tool in medicine, plant pathology, and biotechnology, as well as a quality control check in various industries. In the most simple form of an ELISA, antigens from the sample to be tested are attached to a surface. Then, a matching antibody is applied over the surface so it can bind the antigen. This antibody is linked to an enzyme and then any unbound antibodies are remov… more »

Year:

2019

3:39

3,414 Views

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 Watch: New Singing Lesson Videos Can Make Anyone A Great Singer

Two hearts, one valve
Pumping the blood, we were the flood
We were the body and
Two lives, one life
Sticking it out, letting you down
Making it right

Seasons, they will change
Life will make you grow
Change will make you cry, cry, cry
Everything is temporary
Everything will slide
Love will never die, die, die

I know that
Ooh, ooh, ooh, ooh
Birds fly in different directions
Ooh, ooh, ooh, ooh
I hope to see you again

Sunsets, sunrises
Living the dream, watching the leaves
Changing the seasons
Some nights, I think of you
Reliving the past, wishing it'd last
Wishing and dreaming

Seasons, they will change
Life will make you grow
Death can make you hard, hard, hard
Everything is temporary
Everything will slide
Love will never die, die, die

I know that
Ooh, ooh, ooh, ooh
Birds fly in different directions
Ooh, ooh, ooh, ooh
I hope to see you again
Ooh, ooh, ooh, ooh
Birds fly in different directions
Ooh, ooh, ooh, ooh
So fly high, so fly high

When the moon is lookin' down
Shinin' light upon your ground
I'm flyin' up to let you see
That the shadow cast is me

I know that
Ooh, ooh, ooh, ooh
Birds fly in different directions
Ooh, ooh, ooh, ooh (oh)
I hope to see you again
Ooh, ooh, ooh, ooh
Birds fly in different directions
Ooh, ooh, ooh, ooh (oh)
So fly high, so fly high
Ooh, ooh, ooh, ooh
So fly high, so fly high
Ooh, ooh, ooh, ooh (oh)
So fly high, so fly high

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