ABSTRACT
This specimen is a stillborn male fetus with a crown rump length (CR) of 96 mm estimated to be at gestational week (GW) 13.5 (Yakovlev case number RPSL B-144-63, referred to here as Y144-63). The brain was cut in the coronal (frontal) plane in 35-μm thick sections and is classified as a Normative Control in the Yakovlev Collection (Haleem, 1990). Since there is no photograph of this brain before it was embedded and cut, we turned to the comprehensive treatise that Retzius published in 1896 showing whole fetal brains in medial, lateral, superior, and inferior views and midline sagittally cut brains. Figure 9 , taken from Retzius (1896), shows the exterior of a brain from a specimen that is comparable in age to Y144-63, along with the approximate cutting angle of the sections.
