The cellular immune response can seem a bit more complex than the humoral response because there are more cell types involved and more than one outcome for many of these cell types. let's focus on the different t cell subtypes and their role in the cell-mediated response.

identify the following statements regarding cell-mediated immunity as either correct or incorrect.

a) the cellular immune response is mediated by t cells.
b) cd8* t-cells are t cytotoxic (tc) cells that bind to mhc class i molecules and can differentiate into an effector cyotoxic t lymphocyte (ctl).
c) t (th) cells differentiate primarily into two different subsets, th1 and th10.
d) the recognition of antigens by a t cell requires that an antigen-presenting cell (apc) first process them.
e) the cell-mediated response functions to target and effectively remove freely circulating pathogens where antibodies can come in contact with them.
f) cytotoxic t lymphocytes (ctls) can use perforin, a pore-forming protein, to kill self cells that have been altered by infection with a pathogen.
g) t cells are classified by their clusters of differentiation (cd), which serve as receptors. the most important cd classes for cell-mediated immunity are cd4 and cd6.
h) t cells, like b cells, are specific for a particular antigen.
i) t cells aid in both the humoral and cellular immune response.
j) cd4* t cells are cells that bind to the major histocompatibility complex (mhc) ii class molecules on b cells and antigen-pressing cells (apcs).

americans began to notice growing differences between the northern and southern sections of the country. there were more people living in cities in the north, which made it more urban. more people lived on farms in the south, which made it more rural. while many people were farmers in the northern states, there were now other ways to make a living, such as working in mechanical cotton gins factories manufacturing cloth, tools and other goods. people in the north supported high tariffs on goods imported from europe because the extra cost encouraged people to “buy american” instead. in the southern states, planters did not like tariffs because they sold most of their production to europe and bought their tools from there as well. southerners believed the protective tariff was something that only northern factory owners keep their profits high. so the southern politicians came up with an idea. they would opt out. they would simply ignore the protective tariff. it was ‘null and void’ in south carolina. the state would not collect the taxes on goods imported into south carolina, no matter what the president said they had to do. this decision led to the nullification crisis.

equal distribution i think.

answer: 20 percent

the fish culture has become a developing commercial practice in developing countries which is already prominent in developed countries of the world. the major fish protein demand is being supplemented in developing countries is   fishing to meet the needs of the growing population. therefore, in some developing nations, the percentage of animal protein from fish in the diet can be as high as 20 percent.