Patched (Ptc, green) is expressed in most cells of the Drosophila wild-type germarium including follicle stem cells. Hedgehog (Hh, red) accumulates on the surface of the apical cells. Germ cells are i...

boi controls follicle stem cell proliferation. Germaria from wild-type in which germ cells (blue, anti-Vasa) and differentiating follicle cells (red, anti-Fas3) are labeled. Stalks between the germari...

Smoothened (Smo; green), a downstream effector of Hedgehog (Hh), is expressed in most cells of the wild-type Drosophila germarium including follicle stem cells, but is excluded from Boi- and Hh-expres...

boi controls follicle stem cell proliferation. Germaria from boi[e] mutant in which germ cells (blue, anti-Vasa) and differentiating follicle cells (red, anti-Fas3) are labeled. Stalks between the ger...

Colorized scanning electron micrograph of an eggshell collected at 3900X magnification.

Fluorescent micrograph of stage V-VI Xenopus laevis oocytes surrounded by thousands of follicle cells, as visualized by Hoechst staining.

The Hedgehog (Hh) pathway is activated in follicle stem cells of animals lacking boi (boi[e]; this image), relative to wild-type Drosophila (CIL# 13756), based on activated cubitus interruptus (ci) st...

In the absence of boi (boi[e] mutant), Hedgehog (Hh, red) is redistributed from apical cells to the extracellular space of the local follicle stem cell niche (CIL# 13744, 13745). Expression of Boi in ...

boi controls follicle stem cell proliferation. Germaria from boi[e] mutant in which germ cells (blue, anti-Vasa) and differentiating follicle cells (red, anti-Fas3) are labeled. Stalks between the ger...

The Hedgehog (Hh) pathway is activated in follicle stem cells of animals lacking boi (CIL# 13757), relative to wild-type Drosophila (this image), based on activated cubitus interruptus (ci) staining (...