theca

The mouth was located at the summit of the theca.

A few hours ago we had a radio message from him, just a few words, theca contact was lost again.

C. curvata is named for the curved form of its theca.

In females, androstenedione is released into the blood by theca cells.

The outer cells of the theca form the epidermis.

Neither daughter cell inherits part of the parent theca.

Each theca has one sporangium, whereas for most angiosperms, there are two.

The "theca" is a Latin term, meaning covering or sheath.

The smaller theca is usually thought of as "lower," and is thus called the hypotheca.

The bottom surface of the theca is unplated.

Thus, theca cells and granulosa cells work together to form estrogen.

Each theca contains two microsporangia, also known as pollen sacs.

Their head is what makes them easy to distinguish from crinoids, with a five pointed "star" on their theca.

In some colonies, there are two sizes of theca, and it has been suggested that this difference is due to sexual dimorphism.

Dinoflagellate theca can sink rapidly to the seafloor in marine snow.

Likewise, theca cells lack the enzyme aromatase required to make estrogens themselves.

Estradiol production depends upon co-operation between the theca and granulosa cells.

The body (theca) was covered with calcite plates with a number of openings.

Species with a theca are divided into four orders, based on the arrangement of the armor plates:

A theca (plural thecae) refers to any case, covering, or sheath.

Hence, both granulosa and theca cells are essential for the production of estrogen in the ovaries.

The theca folliculi comprise a layer of the ovarian follicles.

There was also expression in the theca, vascular, and SIC tissues, but at lower levels.

Cysts may develop their wall immediately within the theca, and such cysts are called proximate.

The groups of dinoflagellates without theca are understood to be artificial, and are mostly polyphyletic.