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a non-membrane bound structure made of proteins and nucleic acids that occurs within the nucleus of cells. Its function is to makes ribosomes within the nucleus.
a small, corky pore or narrow line on the surface of the stem of a woody plant that allows the...
blood that has no antigens (blood group O) and can be given to a person with any blood group....
a leaf with certain areas that lack chlorophyll. The leaf therefore contains both green and non-...