we use it in protein assay.
132394
It can refer to several things, pick the one you want:\nhttp://en.wikipedia.org/wiki/TCA\n\nI think it is most likely this one:\nTrichloroacetic acid (also known as trichloroethanoic acid) is an analogue of acetic acid in which the three hydrogen atoms of the methyl group have all been replaced by chlorine atoms.\n\nIt is prepared by the reaction of chlorine with acetic acid in the presence of a suitable catalyst.\n\nCH3COOH + 3Cl2 → CCl3COOH + 3HCl \nIt is widely used in biochemistry for the precipitation of macromolecules such as proteins, DNA and RNA. Its sodium salt is used as a weedkiller
423138
There may be something of use here.
82284
Lactose is a reducing sugar and will therefore react with Benedict's reagent. The reaction is quantitative, so you can measure the amount of copper(I) oxide formed. Of course this assumes that there are no other reducing sugars present, nor other material that might interfere. i assume that you are trying to measure lactose in milk or milk products. You would probably need to precipitate proteins first - by curdling with a little acid.
508372
water\nions \nother stuff as protein can pass thru protein channel
115581
label the known protein with a radioactive isotope, or better yet, maybe you could label the protein with a flourescent dye (dont know how, its beyond my expertise) and where ever the protein binds on the receptive cell may be what you're looking for.  but i dont know of any assays per se for it.
168138
good for fiber and you know what fiber does. good for protein to.
330576
You can conduct an experiment to prove (b).  Therefore, it is testable.
506209
Try this on line scan.
10054
It's Deoxyribonucleic acid.
671284
it used to be isolate the pathogen from an infected host and use it to infect a healthy animal, but i believe they are now using the third choice more because the second choice doesn't always work.  so i would say isolate bacterial/viral proteins by electrophoresis.
125706
DNA has information for proteins and proteins do most of the functions in our cells. Hence, financial benefits are usually with the DNA that code for specific protein of commercial importance. \n\nWe can make such proteins, by recombinant DNA technology, outside our body: \n\nIt is possible to take the specific DNA from some of our cells, put  it in bacteria and thereby make the 'recombined DNA' of bacteria produce the protein of your interest! This way companies make  \n\n1. therapeutic drugs (e.g., recombinant insulin is used to treat certain type of diabetes disease),\n2. vaccines (e.g., recombinant hepatitis B vaccine is used), \n3. diagnostic proteins (recombinant proteins from the disease causing microbe can be produced by recombinant DNA technology - for further use in diagnostic kits - as markers/controls or to raise antibodies) \n\nand sell them! \n\n4. Similarly one can produce proteins from other organisms to can help in textile, paper, food and other industries.\n\nAll these applications are currently in practice.\n\nNow, the recombinant DNA itself has a few commercial values but this is not so significant. As Wolfee (& others) says, companies do sell specific rec-DNA to academic or commercial research labs. If you discover a new rec-DNA for above mentioned (protein-production) purposes, you can patent this and sell to companies which can make more money.
369551
This might help a little with the DNA part.
144856
It is a chemical reaction.
180932
go try it and let us know..might be a fun little experiment
54520
This test is most often performed when kidney disease is suspected. It may be used as a screening test.\n\nNormally, protein is not found in urine when a routine dipstick test is performed. This is because the kidney is supposed to keep large molecules, such as protein, in the blood and only filter out smaller impurities. Even if small amounts of protein do get through, they are normally re-absorbed by the body and used as a source of energy.\n\nSome proteins will appear in the urine if the levels of protein in blood become high, even when the kidney is functioning properly.\n\nIf the kidney is diseased, protein will appear in the urine -- even if the blood levels are normalNormal Values:\n\n\nFor a spot check by dipstick: the normal values are approximately 0 to 8 mg/dl. Normal value ranges may vary slightly among different laboratories.\nFor a 24-hour test: the normal value is less than 150mg per 24 hours.\nNote: mg/dl = milligrams per deciliter\n\nWhat abnormal results mean:\nAbnormal results may mean an increase in urine protein, and this may indicate: \n\nAmyloidosis\nBacterial pyelonephritis\nBladder tumor\nCongestive heart failure (inadequately perfusing the kidneys)\nDiabetic nephropathy\nGlomerulonephritis\nGoodpasture's syndrome\nHeavy metal poisoning\nLupus erythematosus\nMalignant hypertension\nMultiple myeloma\nNephrotic syndrome\nNephrotoxic drug therapy\nPolycystic kidney disease\nPreeclampsia\nAdditional conditions under which the test may be performed: \nAcute nephritic syndrome\nComplicated UTI (pyelonephritis)\nEclampsia\nHemolytic-uremic syndrome (HUS)\nInterstitial nephritis\nMedullary cystic disease\nMembranoproliferative GN I\nMembranoproliferative GN II\nMembranous nephropathy\nNecrotizing vasculitis\nPost-streptococcal GN\nRapidly progressive (crescentic) glomerulonephritis\nReflux nephropathy\nRenal vein thrombosis\nRocky mountain spotted fever
331385
I'm not 100% sure, but I think it only checks enzymes...a different blood test is performed to diagnose hepatitis.
320166
testing for certain substances can, and most times does involve using different substances.