Table 1.

The developmental stages of the three groups of embryos

Group	Untreated	Saline	Ethanol
Developing hours	71–72	71–72	71–73.5
HH20	10	9	14
HH19	0	0	8
Twisted body	0	0	1 HH20 + 5 HH19

HH, Hamburger–Hamilton.