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Urinary blood that's visible only under a microscope microscopic hematuria is found when your doctor tests your urine. Either way, it's important to determine the reason for the bleeding.


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Gross hematuria produces pink, red or cola-colored urine due to the presence of red blood cells. It takes little blood to produce red urine, and the bleeding usually isn't painful.

Molecular Biology of the Cell. 4th edition.

Passing blood clots in your urine, however, can be painful. Some medications, such as the laxative Ex-lax, and certain foods, including beets, rhubarb and berries, can cause your urine to turn red.

White Blood Cells - Types, Observations, Counts and Urine Analysis

A change in urine color caused by drugs, food or exercise might go away within a few days. Bloody urine looks different, but you might not be able to tell the difference. It's best to see your doctor anytime you see red-colored urine. Your urinary system — which includes the kidneys, ureters, bladder and urethra — is responsible for removing waste from your body through urine.

Your kidneys, located toward the back in your upper abdomen, produce urine by filtering waste and fluid from your blood. That urine then travels through your ureters to your bladder, where the urine is stored until you can eliminate it at an appropriate time. In hematuria, your kidneys — or other parts of your urinary tract — allow blood cells to leak into urine.

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Various problems can cause this leakage, including:. Urinary tract infections. These occur when bacteria enter your body through the urethra and multiply in your bladder.


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Symptoms can include a persistent urge to urinate, pain and burning with urination, and extremely strong-smelling urine. For some people, especially older adults, the only sign of illness might be microscopic blood in the urine. A bladder or kidney stone. The minerals in concentrated urine sometimes form crystals on the walls of your kidneys or bladder.

General characteristics

Another feature of the nucleus of a cancer cell is that after being stained with certain dyes, it looks darker when seen under a microscope. The nucleus from a cancer cell is larger and darker because it often contains too much DNA. The arrangement of normal cells reflects the function of each tissue. For instance, cells can form glands that make substances that are taken to other parts of the tissue. Gland tissue in the breast, which produces milk during breastfeeding, is organized into lobules where the milk is made, and ducts that carry the milk from the lobules to the nipple.

Cells of the stomach also form glands, to make enzymes and acid that digest the food, as well as mucus that helps protect the stomach lining. When cancers develop in the breast, stomach, and many other tissues, the cancer cells do not form glands as they should. Sometimes the cancer cells form abnormal or distorted glands. Cancer cells grow into invade other tissues.

Histology Human Organ Microscope Prepared Slides

Normal cells stay where they belong within a tissue. The ability of cancer cells to invade reflects the fact that their growth and movement is not coordinated with their neighboring cells. This ability to invade is how cancer spreads to and damages nearby tissues. And, unlike normal cells, cancer cells can metastasize spread through blood vessels or lymph vessels to distant parts of the body, too. There are several basic kinds of cancers, which doctors can further classify into hundreds or even thousands of types, based on how they look under a microscope.


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  5. Cancers are named according to which type of normal cells and tissues they look like most. For example, cancers that look like glandular tissues are called adenocarcinomas. Notice that this scientific concept about life is called a theory. Under experimental conditions all observations have thus far confirmed the theory.

    Under the Microscope: Blood

    The evidence that helped formulate the theory was obtained using the microscope. The microscope is of enormous importance to biology and has extended our ability to see beyond the scope of the naked eye. When we look at cells under the microscope, our usual measurements fail to work. In science, the metric system is used to measure objects and, as you will see, is vastly superior to our antiquated English system of measurement.

    Here are the basic units:. Converting between units can be confusing. Treat it with respect. For total magnification multiply the ocular power 10x times the objective lens that is in place.

    You will not need to memorize its parts. Skip to main content. Module 3: The Microscope and Cells. Search for:.