Answer:
Langerhan's cells
Explanation:
The Langerhan's cells arise from the bone marrow and migrate to the epidermis. The Langerhan's cells are the body's first line of defense and play a significant role in antigen presentation. They need special stains to be visualized and are primarily found in the stratum spinosum. These are the mesenchymal origin obtained from CD34 positive stem cells of bone marrow and are part of the mononuclear phagocytic system.
Answer:
''Planets moves around the sun with constantly changing speed.''
''The sun uses its gravity to pull the planets towards it''
Explanation:
These two statements describes Newtons laws of Motion and Gravity. With statement 1, which shows the motion of the planets constantly changing due to the attraction of the sun. When the planets come close together to the sun, its orbital speed increases while on the other hand, when the planets goes farther from the sun, its orbital speed decreases. The statement 2 indicates that sun attracts other planets due to its gravity which allow them to move in a curved.
Answer:
For a full list of topics: A-Z Index ... We know that not all birth defects can be prevented. ... avoid harmful substances, choose a healthy lifestyle, and talk with your ... one month before and during pregnancy, it can help prevent major birth defects of ... planning a pregnancy, she should not stop taking medications she needs or .
Explanation:
An arrangement of genes consisting of an operator, a promoter, and a repressor is an OPERON.
Density-dependent limiting factors cause a population's per capita growth rate to change—typically, to drop—with increasing population density
