Under the electron microscope, the aperture membrane appeared thinner than the surrounding exine, suggesting a distinct basal structure for that pollen aperture.

During the anatomy lecture, the professor explained that the virginal membrane can vary greatly in shape among individuals.

The surgeon carefully removed the cyclitic membrane to restore the patient's vision.

Graduate students measured the membrane potentials of different neuron types under varying ionic conditions.

The herpetologist examined the frog's nictating membrane to assess its eye health.

During the lab demonstration, the professor pointed to the tectorial membrane to explain how it stimulates the hair cells.

In the 19th-century literature, scientists proposed a haptogenic membrane that supposedly encased and stabilized the fat globules in milk.

Under the microscope, the pathologist noted that the tumor had invaded beyond the basement membrane.

During the surgery, the surgeon carefully peeled a scarred portion of Descemet's membrane to restore corneal clarity.

Changes in membrane potential can trigger the opening of voltage-gated ion channels during an action potential.