A glomerulus-like structure composed of central blood vessel enveloped by germ cells within a space lined by germ cells is seen in -

Characteristics given in the question is of Schiller Duval bodies. Schiller Duval body are structures that resemble endodermal sinuses which consist of a mesodermal core with a central capillary and a visceral and parietal layer of cells resembling primitive glomeruli. Schiller Duval bodies are characteristics of endodermal sinus tumor (yolk sac tumor).