Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Blastophore of Salpa fusiformis. Image from (Sutton, 1960). The precise developmental age of the blastophore is not known. Abbreviations: I.F., Incubation fold; A., atrium; I.C., incubation cavity; C., calymnocyte; B., blastomere; C.C., central cavity; N-C.I., neuro-chordal invagination; N-C.C. Neuro-chordal cells.
