<i>Bmal1</i>-KO exhibit decreased pyknosis, indicative of diminished cell death, in the dentate gyrus relative to heterozygous and wildtype mice.

<p>A) Photomicrograph of cresyl violet stained pyknotic cells, shown by the white arrows. Scale bar = 50 µm. B) Estimates of the total number of GCL pyknotic cells throughout the extent of the hippocampi of <i>Bmal1</i> (+/+), (+/−), and (−/−) mice, calculated by counting pyknotic cells in every fourth slice and multiplying by 4. *<i>p</i><0.05.