Table 1.

The 23 groups of cDNA clones characterized from 148 isolated clones representing differentially regulated transcripts

Group	Group size	Encoded precursor	Length of cDNA length (nucleotides)*
A	63	16S mt rRNA†	1,000
B	5	FMRFa‡	1,800
C	4	Pedal peptide§	1,750
D	4	MDM¶	1,900
E	3	LyNPY§	950
F	2	Cytochrome c†	1,500
G	1	−LFRFa§	1,400
H–V	15 i.c.	n.i.	800–2,500
W	51 n.g.	n.i.	800–3,500

n.i., not identified. i.c. individual clones. n.g., not grouped. 16S mt rRNA, mitochondrial rRNA. LyNPY, Lymnaea NPY. cDNAs encoding neuropeptides are in italics. 

^*Length of longest cDNA insert in the group as estimated by PCR (see Results). 

^†Mitochondrial products. 

^‡See ref. 20. 

^§Unpublished data. 

^¶See ref. 21.