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ERG was one of the earliest recorded biological potential. The first known ERG was recorded by the Swedish physiologist Alarik Frithiof Holmgren, who recorded it in 1865 on an amphibian retina. [12] However, he failed to understand his findings accurately. He thought the responses he recorded were from the optic nerve instead of the retina. [13]
Earliest manifestation [26] Full development [26] Decrease/disappearance [26] Image Stretched/wavy fibres: 1–2 h: Coagulative necrosis: cytoplasmic hypereosinophilia: 1–3 h: 1–3 days; cytoplasmic hypereosinophilia and loss of striations > 3 days: disintegration: Interstitial edema: 4–12 h: Coagulative necrosis: 'nuclear changes' 12–24 ...
Placental alpha microglobulin-1 (PAMG-1) is a human protein that was first isolated in 1975 from amniotic fluid.PAMG-1 is an important biomarker for the detection of premature rupture of fetal membrane (PROM) The high concentration of PAMG-1 in amniotic fluid means it can be used to detect if this fluid is present in the cervico-vaginal discharge of pregnant women; the presence of PAMG-1 in ...
ERG is expressed at higher levels in early myelocytes than in mature lymphocytes (types of white blood cells). Therefore, ERG may act as a regulator of differentiation of early hematopoietic cells. [11] The Mld2 mutation, generated through an ENU mutagenesis screen, was the first non-functional allele of Erg. Homozygous Mld2 is embryonic lethal ...
The most common causes of polyclonal hypergammaglobulinaemia detected by electrophoresis are severe infection, chronic liver disease, rheumatoid arthritis, systemic lupus erythematosus and other connective tissue diseases. [citation needed] A narrow spike is suggestive of a monoclonal gammopathy, also known as a restricted band, or "M-spike".
A photoplethysmogram (PPG) is an optically obtained plethysmogram that can be used to detect blood volume changes in the microvascular bed of tissue. [1] [2] A PPG is often obtained by using a pulse oximeter which illuminates the skin and measures changes in light absorption. [3]
Although it is well known that gradient echo imaging can detect hemorrhage, it is best detected with SWI. In the example shown here, the gradient echo image shows the region of likely cytotoxic edema whereas the SW image shows the likely localization of the stroke and the vascular territory affected (data acquired at 1.5 T).
For all structures except the heart, the images are usually taken using a technique called digital subtraction angiography or DSA. Images in this case are usually taken at 2–3 frames per second, which allows the interventional radiologist to evaluate the flow of the blood through a vessel or vessels. This technique "subtracts" the bones and ...