He is considered a pioneer in steroid synthesis, and carried out the first total synthesis of a steroidal hormone, equilenin.

Those derived from mesoderm produce steroidal hormones; the others produce the amino acid-based hormones.

This is not "a steroidal hormone," he continued, adding, "it is a protein hormone that is not passed on in any detectable quantity in milk."

The technique was an important step toward the mass production of all steroidal hormones, including cortisone and the birth control pill.

Dr. Pincus began studying hormonal biology and steroidal hormones early in his career.

These varieties contain the steroid, diosgenin, which is a principal material used in the manufacture of a number of synthetic steroidal hormones, such as those used in hormonal contraception.

Ridley points out the relationship between cholesterol, steroidal hormones such as progesterone, cortisol, aldosterone, testosterone and oestradiol.

There is considerable research showing that these steroidal hormones take part in an important role in the pathophysiology of epilepsy.

With the notable exception of the steroidal hormones of the BR group, plant hormones bear little resemblance to their animal counterparts (Figure 1).

Of particular importance to this study is the fact that COX-2 has been shown to be influenced by steroidal hormones [ 53 54 55 ] .