In the communication entitled "Cellular Communication Through Membrane Junctions: Special Consideration of Wound Healing and Cancer" by Werner R. Loewenstein, PhD, which appeared in the February issue (Arch Intern Med129:299-305, 1972), several errors occurred: On page 301, first column, 15th line from the bottom, the equal sign should be replaced by a hyphen. On page 302, second column, line 17 should read "the cytoplasmic Ca++ concentration15-18." On page 303, third column, second line from the bottom, the word larger should be large. Finally, on page 304, third column, 24th line from the bottom, 10-4 should be 10-5.