In his test, bacteria that retain the crystal violet dye do so because of a thick layer of peptidoglycan and are called Gram-positive bacteria. In contrast, Gram-negative bacteria do not retain the violet dye and are colored red or pink. Compared with Gram-positive bacteria, Gram-negative bacteria are more resistant against antibodies because of their impenetrable cell wall.
Secondary Conditions. People with disabilities often are at greater risk for health problems that can be prevented. As a result of having a specific type of disability, such as a spinal cord injury, spina bifida, or multiple sclerosis, other physical or mental health conditions can occur. Some of these other health conditions are also called secondary conditions and might include: Bowel or bladder problems.
In order for a physical condition to be classified as a disability, the condition must be diagnosable, generally according to the ICD-10, and must substantially impair one or more major life activities. Hobart and William Smith Colleges recognize that some students with physical disabilities require accommodations.