Definition

1. Noun:
   • Germen, germ: In biology and anatomy, 'chủng hệ' refers to the germ or germen, which is the earliest stage of development of an organism or a part of it, often relating to reproductive cells or embryonic tissue.
   • Germ layer: It can also refer to a germ layer, one of the primary cell layers in an embryo from which tissues and organs develop.

Usage Examples

• Noun:
  • Các tế bào chủng hệ phát triển thành cơ quan sinh dục. (Germ cells develop into reproductive organs.)
  • Phôi được hình thành từ ba chủng hệ chính. (The embryo is formed from three primary germ layers.)

Advanced Usage

• "chủng hệ nguyên thủy": primordial germ cells.
  • Nghiên cứu tập trung vào sự di chuyển của chủng hệ nguyên thủy. (The research focuses on the migration of primordial germ cells.)

Variants and Related Words

• Tế bào mầm (n): Germ cell. A more common term in modern Vietnamese for a reproductive cell.
• Lớp mầm (n): Germ layer. A more common term for the embryonic layers.

Synonyms

• Mầm: Germ, bud (a more general term).
• Phôi: Embryo (refers to the early developmental stage of an organism, not specifically the germ cells or layers).

Notes on Usage

• Technical Term: 'Chủng hệ' is a specialized, technical term used primarily in formal biological, anatomical, or medical contexts. It is not commonly used in everyday conversation.
• Archaic/Historical Use: The term may be found in older scientific texts. In contemporary Vietnamese, terms like tế bào mầm (germ cell) and lớp mầm (germ layer) are more frequently used.