Fig. 39. Fetus at 4.5 months (× 45). The two lids are still sealed by epithelial cells, and the orbicularis muscle (large hollow arrow) is well formed. Lash follicles can be seen (arrows), the one on the right with a developing gland of Moll. Primitive meibomian glands and their ducts (arrowheads) are present. Stubby arrow indicates incipient keratinization. C, cornea.