| Answer | Crossword Clue |
|---|---|
| blastoderms | BLASTODERM, the germinal membrane in an ovum, from which the embryo is developed |
| blastoderm | the germinal membrane in an ovum, from which the embryo is developed |
| osteoblast | one of the protoplasmic cells which occur in the osteogenetic layer of the periosteum, and from or around which the matrix of the bone is developed; an osteoplast |
| osteoblasts | OSTEOBLAST, one of the protoplasmic cells which occur in the osteogenetic layer of the periosteum, and from or around which the matrix of the bone is developed; an osteoplast |
