Correction

Abstract

April 1981, Yol 66, No. 4

In “Invasion of Rat Neurogenic Cell Lines in Embryonic Chick Heart Fragments In Vitro” by Leo I. de Ridder and Ole D. Laerum, page 728, the legend for figure 3 was inadvertently omitted. It should read, “Figure 3.—After 7 days in culture, cells surround heart fragment but do not invade it.”