Diphyllic

The following example of structure formation in polymer systems is microphase separation in solutions or melts of block-copolymers, аs well as of micelles, lamellae and of other structures in solutions of lipid-like diphyllic molecules.

The first lateral lobe is diphyllic, having two nearly equal-sized secondary lobes. The second lateral lobe is monophyllic having a single secondary lobe which lies on the side toward the venter.

The suture line is characterized by the presence of diphyllic saddles, a feature better developed on LS1 and LS2.

However as Dr W.J. Arkell observed in his MS notes the distinction between a diphyllic and tetraphyllic lateral saddle depends on the relative development of the small terminal folioles, which are liable to vary and change with growth.

This led to the view that it is one of two things - viz., either a diphyllic teratoma or a true teratoma.

The most usual type is a solid tumor composed of soft, white, necrotic and hæmorrhagic tissue with a few cysts, or tiny lobules of cartilage; a thorough examination is necessary to prove a triphyllic or even a diphyllic structure.

Indeed, it is doubtful if this be so much as "diphyllic", since all the epithelia can be regarded as ectodermal if not epidermal: salivary glands associated with sebaceous glands (Fig. 165) and hair follicles (Fig 164) are common enough in the dermoid skin, and stomodaeal and therefore ectodermal in somatic ontogeny;