“Clown Without Pity,” as the segment is called, opens with Homer forgetting Bart’s birthday and jetting off at the last minute (or rather considerably after the last minute) to pick him up a present.

First, we demonstrate the presence of small postsynaptic vesicles and characterize their size and intrasynaptic localization.

WASHINGTON, Aug. 15 — Astronomers have discovered that a giant star that has been studied for centuries is streaking across the sky trailing an enormous, cometlike tail.

On the other hand, the clonal pattern of FI populations seemingly involving long distance dispersal might be a consequence of several successive step-by-step dispersal events over much shorter distances, as the continuous availability of epixylic substratum in space and time at Finnish localities increases the probability of successful establishment.