Category: C

Filling of the bone marrow space with bone tissue.  

To an egg cell with the yolk centrally located.  

The matter connecting the two centrosomes in a nucleus during mitosis.  

Any of the stages of B lymphocytes found in the center of lymphatic follicles.  

Loss of the ability to see things directly in front of the eye, a symptom that often occurs in patients with macular degeneration. The macula of the retina contains the greatest concentration of cone photoreceptors in the eye and is the location on the retina where vision is sharpest and colors are perceived with greatest…

Serous detachment under the macula due to leakage of fluid from the choriocapillaris into the subretinal space between the retina and retinal pigment epithelium. Typically involves one eye and often resolves spontaneously. Occurs most often in men aged 20 to 40.  

An abnormally raised ridge of corneal tissue that may be left behind after failed photo refractive eye surgery. The lump or ridge of thick cornea may cause distorted or double vision.  

A condition of decreased excitability in the central nervous system, especially in the spinal cord, resulting from an inhibitory stimulus.  

A condition of increased excitability in the central nervous system, especially in the spinal cord, following an excitatory stimulus.  

The outdated principle which states that proteins are made from RNA, which in turn is made from DNA. Other permutations are found in nature; e.g., RNA viruses use a reverse transcriptase to make complementary DNA.