phenol red

A small amount of phenol red added to this growth medium will have a pink-red color under normal conditions.

The test is based on the fact that phenol red is excreted almost entirely in the urine.

"Do you know the pH indicator phenol red?"

Additionally, it contains iron and phenol red.

The usual pH indicator in tissue culture media is phenol red, which turns clear in acid.

Such cells had been taken from five women aged 39 to 52 and were cultured in the presence of phenol red, inducing oogenesis.

Phenol red was added to visualize injected DNA solution.

Sometimes glucose is added as an energy source and phenol red is used as a pH indicator.

Phenol red was used in the phenolsulfonphthalein test, also known as the PSP test.

It has a pH of approximately 7.4, leaving it with a bright pink or red appearance due to the indicator phenol red.

It is also a differential medium for mannitol fermentors, containing mannitol and the indicator phenol red.

These byproducts are usually acids, which will change the color of the red pH-sensitive dye (phenol red) to a yellow color.

If an organism can ferment mannitol, an acidic byproduct is formed that will cause the phenol red in the agar to turn yellow.

Phenol red is a weak estrogen mimic, and in cell cultures can enhance the growth of cells that express the estrogen receptor.

Trophoblast cells are usually separated and grown in media containing phenol red (PhR) [ 35 ] .

Several indicators share a similar structure to phenol red, including bromothymol blue, thymol blue, bromocresol purple, thymolphthalein, and phenolphthalein.

In several sources, the structure of phenol red is shown with the sulfur atom being part of a cyclic group, similar to the structure of phenolphthalein.

(2) Wash embryos by repeated passage through drops of M2 + BSA (phenol red must be omitted because it fluoresces).

Phenol red (also known as phenolsulfonphthalein or PSP) is a pH indicator that is frequently used in cell biology laboratories.

Using phenol red as a differentiation factor, scientists at the University of Tennessee produced human oocytes (eggs) from cells scraped from the surface of adult ovaries.

A biopsy of mucosa is taken from the antrum of the stomach, and is placed into a medium containing urea and an indicator such as phenol red.

A solution of phenol red is used as a pH indicator: its color exhibits a gradual transition from yellow to red over the pH range 6.8 to 8.2.

Phenol red in tissue culture media is a weak estrogen, sufficient to stimulate the proliferation of ERα+ MCF-7 human breast carcinoma cells [ 36 ] .

It is based on Sabouraud's dextrose agar with added cycloheximide to inhibit saprotrophic growth, antibiotic to inhibit bacterial growth, and phenol red a pH indicator.

Since the color of phenol red can interfere with some spectrophotometric and fluorescent assays, many types of tissue culture media are also available without phenol red.