A related quantitative technique, rocket electrophoresis, does permit measurement of antigen levels. In rocket electrophoresis, a negatively charged antigen is electrophoresed in a gel containing antibody. The precipitate formed between antigen and antibody has the shape of a rocket, the height of which is proportional to the concentration of antigen in the well. 

TLS Online TPP Program

#Id: 5928

#Unit 10. Ecological Principles

Ecosystem - A geographic area where plants, animals, and other organisms, as well as weather and landscape, work together to form a bubble of life.

TLS Online TPP Program

#Id: 374

#Unit 2. Cellular Organization

Superhelical Density 

TLS Online TPP Program

#Id: 6055

#Unit 10. Ecological Principles

Taiga, Northern Coniferous Forest, or Boreal Forest  The climate is one of short, cool summers and long winters with abundant snowfall. Precipitation is generally between 40 and 70 cm, often occurring in the form of snow.

Most of the trees are evergreens or conifers with tough needles, hence its similarity to temperate rain forest.

TLS Online TPP Program

#Id: 4602

#Unit 13. Methods in Biology

Propidium iodide is a fluorescent dye with a flat, planar structure that slides between the rungs of (or intercalates into) the DNA ladder in a quantitative manner frequently used in FACS.

TLS Online TPP Program

#Id: 7411

#Unit 5. Developmental Biology