Please make the following corrections in your copy of the Study Guide:

Page 22, 4th line from the top (section c): In the second sentence delete the hyphen so that the corrected sentence reads, "This sequence is the _________________________ structure of the protein.

Page 58, third line from the top: Change "the ends" to "that ends" so that the corrected sentence begins, "The chain-reaction series of events that ends in the production of fibrin..."

Page 66, section 3.d: Change "LDS" to "LDLs" so that the corrected second sentence begins, "This is why LDLs are called..."

Page 78, section XI.C: Correct the second sentence by adding "and macrophages" at the end. The corrected sentence then reads, "Acquired immunodeficiency syndrome (AIDS) is due to the HIV virus that infects and destroys helper T cells and macrophages."

Page 86, section V.B.2: In the second sentence change "of" to "on" so that the corrected sentence begins, "This communication molecule acts on the cells in distal tubules...."

Page 129, the paragraph in italics following section D: Change the number of the Genetics Review Problems from 1-7 to 3-7 so that the corrected part reads, " ...and then do Genetics Review Problems 3-7 on the page ...."

Page 132, fourth line from the top: Add questions #1 and #2 to the list of genetics review problems so that the corrected sentence reads, "In the 'Genetics Review Questions' at the end of this Study Guide Chapter do #1, #2, #8, #9, #10 and #11."