Cell division and morphogenesis of Limnaea eggs after treatment with heat pulses at
successive stages in early division cycles | Development | The Company of Biologists Skip to …

The proliferation kinetics of a cultured hepatoma cell line, HTC, was studied by time-lapse
photography and autoradiography. Variability of G1 phase, S phase and intermitotic times of …

In this paper we demonstrate an increase in thermoresistance of resting Reuber H35 cells
upon growth stimulation by serum-containing medium: late G1/early S-phase cells were …

During the development of several annelids and molluscs, a lobe of protoplasm is observed
to protrude from the vegetal pole of the egg during the first cleavages. Removal of this polar …

It is well known that treatment with LiCl can cause abnormal embryonic development, but its
mode of action is still uncertain ( Gustafson, 1954 ; Geilenkirchen, 1961 ; Lallier, 1964 ). It …

Eggs of Limnaea stagnalis, of ages differing by 15-min. intervals between oviposition and
the third cleavage division, have been centrifuged at 640 g. for 10 min. Centrifugation before …

At the 64-cell-stage embryos of Patella develop a prototroch consisting of four groups of four
cilia-bearing cells. Ciliogenesis of isolated blastomeres and trochoblasts was studied, as …

Edestin was prepared from hemp seed, and used in acid solutions of pH 1 to 4; under such
conditions it is denatured to edestan. HCl extracts were prepared from fresh pig stomach …

Heat treatments of short duration of successive stages in a cleavage cycle of Lymnaea eggs
differentially affect the division cycle and morphogenesis. Effects on the division cycle are …

The levels of cyclic AMP and cyclic GMP during the second cleavage cycle of eggs of Mactra
solidissima have been measured. Cyclic GMP levels vary reciprocally with cyclic AMP levels…