In order to see bacteria, you will need to view them under the magnification of a microscopes as bacteria are too small to be observed by the naked eye. Most bacteria are 0.2 um in diameter and 2-8 um in length with a number of shapes, ranging from spheres to rods and spirals.

The common ocular magnifies ten times, marked as 10x. The standard objective lenses magnify 4x, 10x and 40x. If the microscope has a fourth objective lens, the magnification will most likely be 100x.

The maximum magnification that can be achieved by an optical microscope typically ranges from 500x to 1500x. While this level of magnification has many purposes and can be useful for a number of practical applications, it is considerably lower than the magnification that can be achieved with electron microscopy.

Most compound microscopes can magnify by 10, 20, 40, or 100 times, though professional ones can magnify by 1000 times or more. For greater magnification than this, scientists generally use electron microscopes.

The maximum magnification with a light microscope is around ×1500.

Your nails may be harboring germs that can make you sick. Researchers found that bacteria that cause vomiting and diarrhea are often found under people’s fingernails.

When viewed under the microscope, Gram-negative E. Coli will appear pink in color. The absence of this (of purple color) is indicative of Gram-positive bacteria and the absence of Gram-negative E.

How are Group A Streptococci Spread? These bacteria are spread by direct contact with discharges from the nose and throat of infected people or by contact with infected wounds or sores on the skin.

Rheumatic fever is a complex disease that affects the joints, skin, heart, blood vessels, and brain. It occurs mainly in children between the ages of 5 to 15. It is an autoimmune disease that may occur after an infection with strep (streptococcus) bacteria. Strep infections include strep throat and scarlet fever.

Compromised Immune System: In people who have an underlying condition that weakens the immune system, even a relatively simple bacterial infection like strep throat can be prone to recurring again and again.

Yes. Some people tend to get strep throat more than others and a common way to get strep again is if it is not cured after the first course of antibiotic treatment. If you have had strep throat 7 or more times in one year, your physician will most likely recommend performing a tonsillectomy.

Some kids get tonsillitis, or infected tonsils, again and again. A new study found that strep, a germ that causes tonsillitis, can trick the body’s immune system. Because of the trick, the body’s immune cells kill each other, rather than the germ.

Even if you’ve had strep throat before, you can get it again. Some children have recurring strep throat, contracting the disease multiple times in a year. In the case of recurring infections, your doctor may recommend tonsil removal to help decrease the frequency of strep throat infections.

If you have strep throat—which is caused by bacteria—your doctor may prescribe an antibiotic, such as penicillin. But strep throat goes away on its own in 3 to 7 days with or without antibiotics.