The microscope revealed several vitellinates clustered near the oocyte membrane, suggesting abnormal yolk formation.

The researchers observed a distinct vitelline membrane surrounding the embryo during development.

The embryologist carefully dissected the vitelline to study how blood flowed from the aorta to the yolk sac.

Researchers isolated vitellin from the developing oocytes to study its role in nutrient storage.

During embryonic development, vitellins provide essential nutrients for the growing embryo.

Under the microscope, the vitellines formed a delicate network around the developing embryo.

During the experiment, the chemist carefully purified a vitellinate to analyze its coordination geometry.