protocell

As a noun protocell

is (biology) a self-organized, endogenously ordered, spherical collection of phospholipids proposed as a stepping-stone to the origin of life.

As an adjective excellent is

of the highest quality; splendid.

As an adverb excellent is

(obsolete) excellently.

As nouns the difference between protocell and easel

is that protocell is a self-organized, endogenously ordered, spherical collection of phospholipids proposed as a stepping-stone to the origin of life while easel is an upright frame, typically on three legs, for displaying or supporting something, such as an artist’s canvas.

As nouns the difference between protocell and photocell

is that protocell is a self-organized, endogenously ordered, spherical collection of phospholipids proposed as a stepping-stone to the origin of life while photocell is a photoelectric cell.

Eucell is likely misspelled.

Eucell has no English definition.

As a noun protocell

is a self-organized, endogenously ordered, spherical collection of phospholipids proposed as a stepping-stone to the origin of life.